%
to
to
to
Ratio: 25 30 35 40 45 50 55 60 65 70 75 80 85
Wheel Size 12
Wheel Size 13
145
145/25-13
d=15.85
w=1.43
145/30-13
d=16.43
w=1.71
145/35-13
d=17.00
w=2.00
145/40-13
d=17.57
w=2.28
145/45-13
d=18.14
w=2.57
145/50-13
d=18.71
w=2.85
145/55-13
d=19.28
w=3.14
145/60-13
d=19.85
w=3.43
145/65-13
d=20.42
w=3.71
145/70-13
d=20.99
w=4.00
145/75-13
d=21.56
w=4.28
145/80-13
d=22.13
w=4.57
145/85-13
d=22.70
w=4.85
155
155/25-13
d=16.05
w=1.53
155/30-13
d=16.66
w=1.83
155/35-13
d=17.27
w=2.14
155/40-13
d=17.88
w=2.44
155/45-13
d=18.49
w=2.75
155/50-13
d=19.10
w=3.05
155/55-13
d=19.71
w=3.36
155/60-13
d=20.32
w=3.66
155/65-13
d=20.93
w=3.97
155/70-13
d=21.54
w=4.27
155/75-13
d=22.15
w=4.58
155/80-13
d=22.76
w=4.88
155/85-13
d=23.37
w=5.19
165
165/25-13
d=16.25
w=1.62
165/30-13
d=16.90
w=1.95
165/35-13
d=17.55
w=2.27
165/40-13
d=18.20
w=2.60
165/45-13
d=18.85
w=2.92
165/50-13
d=19.50
w=3.25
165/55-13
d=20.15
w=3.57
165/60-13
d=20.80
w=3.90
165/65-13
d=21.44
w=4.22
165/70-13
d=22.09
w=4.55
165/75-13
d=22.74
w=4.87
165/80-13
d=23.39
w=5.20
165/85-13
d=24.04
w=5.52
175
175/25-13
d=16.44
w=1.72
175/30-13
d=17.13
w=2.07
175/35-13
d=17.82
w=2.41
175/40-13
d=18.51
w=2.76
175/45-13
d=19.20
w=3.10
175/50-13
d=19.89
w=3.44
175/55-13
d=20.58
w=3.79
175/60-13
d=21.27
w=4.13
175/65-13
d=21.96
w=4.48
175/70-13
d=22.65
w=4.82
175/75-13
d=23.33
w=5.17
175/80-13
d=24.02
w=5.51
175/85-13
d=24.71
w=5.86
185
185/25-13
d=16.64
w=1.82
185/30-13
d=17.37
w=2.19
185/35-13
d=18.10
w=2.55
185/40-13
d=18.83
w=2.91
185/45-13
d=19.56
w=3.28
185/50-13
d=20.28
w=3.64
185/55-13
d=21.01
w=4.01
185/60-13
d=21.74
w=4.37
185/65-13
d=22.47
w=4.73
185/70-13
d=23.20
w=5.10
185/75-13
d=23.93
w=5.46
185/80-13
d=24.65
w=5.83
185/85-13
d=25.38
w=6.19
195
195/25-13
d=16.84
w=1.92
195/30-13
d=17.61
w=2.30
195/35-13
d=18.37
w=2.69
195/40-13
d=19.14
w=3.07
195/45-13
d=19.91
w=3.45
195/50-13
d=20.68
w=3.84
195/55-13
d=21.44
w=4.22
195/60-13
d=22.21
w=4.61
195/65-13
d=22.98
w=4.99
195/70-13
d=23.75
w=5.37
195/75-13
d=24.52
w=5.76
195/80-13
d=25.28
w=6.14
195/85-13
d=26.05
w=6.53
205
205/25-13
d=17.04
w=2.02
205/30-13
d=17.84
w=2.42
205/35-13
d=18.65
w=2.82
205/40-13
d=19.46
w=3.23
205/45-13
d=20.26
w=3.63
205/50-13
d=21.07
w=4.04
205/55-13
d=21.88
w=4.44
205/60-13
d=22.69
w=4.84
205/65-13
d=23.49
w=5.25
205/70-13
d=24.30
w=5.65
205/75-13
d=25.11
w=6.05
205/80-13
d=25.91
w=6.46
205/85-13
d=26.72
w=6.86
215
215/25-13
d=17.23
w=2.12
215/30-13
d=18.08
w=2.54
215/35-13
d=18.93
w=2.96
215/40-13
d=19.77
w=3.39
215/45-13
d=20.62
w=3.81
215/50-13
d=21.46
w=4.23
215/55-13
d=22.31
w=4.66
215/60-13
d=23.16
w=5.08
215/65-13
d=24.00
w=5.50
215/70-13
d=24.85
w=5.93
215/75-13
d=25.70
w=6.35
215/80-13
d=26.54
w=6.77
215/85-13
d=27.39
w=7.19
225
225/25-13
d=17.43
w=2.21
225/30-13
d=18.31
w=2.66
225/35-13
d=19.20
w=3.10
225/40-13
d=20.09
w=3.54
225/45-13
d=20.97
w=3.99
225/50-13
d=21.86
w=4.43
225/55-13
d=22.74
w=4.87
225/60-13
d=23.63
w=5.31
225/65-13
d=24.52
w=5.76
225/70-13
d=25.40
w=6.20
225/75-13
d=26.29
w=6.64
225/80-13
d=27.17
w=7.09
225/85-13
d=28.06
w=7.53
235
235/25-13
d=17.63
w=2.31
235/30-13
d=18.55
w=2.78
235/35-13
d=19.48
w=3.24
235/40-13
d=20.40
w=3.70
235/45-13
d=21.33
w=4.16
235/50-13
d=22.25
w=4.63
235/55-13
d=23.18
w=5.09
235/60-13
d=24.10
w=5.55
235/65-13
d=25.03
w=6.01
235/70-13
d=25.95
w=6.48
235/75-13
d=26.88
w=6.94
235/80-13
d=27.80
w=7.40
235/85-13
d=28.73
w=7.86
245
245/25-13
d=17.82
w=2.41
245/30-13
d=18.79
w=2.89
245/35-13
d=19.75
w=3.38
245/40-13
d=20.72
w=3.86
245/45-13
d=21.68
w=4.34
245/50-13
d=22.65
w=4.82
245/55-13
d=23.61
w=5.31
245/60-13
d=24.57
w=5.79
245/65-13
d=25.54
w=6.27
245/70-13
d=26.50
w=6.75
245/75-13
d=27.47
w=7.23
245/80-13
d=28.43
w=7.72
245/85-13
d=29.40
w=8.20
255
255/25-13
d=18.02
w=2.51
255/30-13
d=19.02
w=3.01
255/35-13
d=20.03
w=3.51
255/40-13
d=21.03
w=4.02
255/45-13
d=22.04
w=4.52
255/50-13
d=23.04
w=5.02
255/55-13
d=24.04
w=5.52
255/60-13
d=25.05
w=6.02
255/65-13
d=26.05
w=6.53
255/70-13
d=27.06
w=7.03
255/75-13
d=28.06
w=7.53
255/80-13
d=29.06
w=8.03
255/85-13
d=30.07
w=8.53
265
265/25-13
d=18.22
w=2.61
265/30-13
d=19.26
w=3.13
265/35-13
d=20.30
w=3.65
265/40-13
d=21.35
w=4.17
265/45-13
d=22.39
w=4.69
265/50-13
d=23.43
w=5.22
265/55-13
d=24.48
w=5.74
265/60-13
d=25.52
w=6.26
265/65-13
d=26.56
w=6.78
265/70-13
d=27.61
w=7.30
265/75-13
d=28.65
w=7.82
265/80-13
d=29.69
w=8.35
265/85-13
d=30.74
w=8.87
275
275/25-13
d=18.41
w=2.71
275/30-13
d=19.50
w=3.25
275/35-13
d=20.58
w=3.79
275/40-13
d=21.66
w=4.33
275/45-13
d=22.74
w=4.87
275/50-13
d=23.83
w=5.41
275/55-13
d=24.91
w=5.95
275/60-13
d=25.99
w=6.50
275/65-13
d=27.07
w=7.04
275/70-13
d=28.16
w=7.58
275/75-13
d=29.24
w=8.12
275/80-13
d=30.32
w=8.66
275/85-13
d=31.41
w=9.20
285
285/25-13
d=18.61
w=2.81
285/30-13
d=19.73
w=3.37
285/35-13
d=20.85
w=3.93
285/40-13
d=21.98
w=4.49
285/45-13
d=23.10
w=5.05
285/50-13
d=24.22
w=5.61
285/55-13
d=25.34
w=6.17
285/60-13
d=26.46
w=6.73
285/65-13
d=27.59
w=7.29
285/70-13
d=28.71
w=7.85
285/75-13
d=29.83
w=8.42
285/80-13
d=30.95
w=8.98
285/85-13
d=32.07
w=9.54
295
295/25-13
d=18.81
w=2.90
295/30-13
d=19.97
w=3.48
295/35-13
d=21.13
w=4.06
295/40-13
d=22.29
w=4.65
295/45-13
d=23.45
w=5.23
295/50-13
d=24.61
w=5.81
295/55-13
d=25.78
w=6.39
295/60-13
d=26.94
w=6.97
295/65-13
d=28.10
w=7.55
295/70-13
d=29.26
w=8.13
295/75-13
d=30.42
w=8.71
295/80-13
d=31.58
w=9.29
295/85-13
d=32.74
w=9.87
305
305/25-13
d=19.00
w=3.00
305/30-13
d=20.20
w=3.60
305/35-13
d=21.41
w=4.20
305/40-13
d=22.61
w=4.80
305/45-13
d=23.81
w=5.40
305/50-13
d=25.01
w=6.00
305/55-13
d=26.21
w=6.60
305/60-13
d=27.41
w=7.20
305/65-13
d=28.61
w=7.81
305/70-13
d=29.81
w=8.41
305/75-13
d=31.01
w=9.01
305/80-13
d=32.21
w=9.61
305/85-13
d=33.41
w=10.21
315
315/25-13
d=19.20
w=3.10
315/30-13
d=20.44
w=3.72
315/35-13
d=21.68
w=4.34
315/40-13
d=22.92
w=4.96
315/45-13
d=24.16
w=5.58
315/50-13
d=25.40
w=6.20
315/55-13
d=26.64
w=6.82
315/60-13
d=27.88
w=7.44
315/65-13
d=29.12
w=8.06
315/70-13
d=30.36
w=8.68
315/75-13
d=31.60
w=9.30
315/80-13
d=32.84
w=9.92
315/85-13
d=34.08
w=10.54
325
325/25-13
d=19.40
w=3.20
325/30-13
d=20.68
w=3.84
325/35-13
d=21.96
w=4.48
325/40-13
d=23.24
w=5.12
325/45-13
d=24.52
w=5.76
325/50-13
d=25.80
w=6.40
325/55-13
d=27.07
w=7.04
325/60-13
d=28.35
w=7.68
325/65-13
d=29.63
w=8.32
325/70-13
d=30.91
w=8.96
325/75-13
d=32.19
w=9.60
325/80-13
d=33.47
w=10.24
325/85-13
d=34.75
w=10.88
335
335/25-13
d=19.59
w=3.30
335/30-13
d=20.91
w=3.96
335/35-13
d=22.23
w=4.62
335/40-13
d=23.55
w=5.28
335/45-13
d=24.87
w=5.94
335/50-13
d=26.19
w=6.59
335/55-13
d=27.51
w=7.25
335/60-13
d=28.83
w=7.91
335/65-13
d=30.15
w=8.57
335/70-13
d=31.46
w=9.23
335/75-13
d=32.78
w=9.89
335/80-13
d=34.10
w=10.55
335/85-13
d=35.42
w=11.21
Wheel Size 14
Wheel Size 15
Wheel Size 16
Wheel Size 16.5
Wheel Size 17
145
145/25-17
d=19.85
w=1.43
145/30-17
d=20.43
w=1.71
145/35-17
d=21.00
w=2.00
145/40-17
d=21.57
w=2.28
145/45-17
d=22.14
w=2.57
145/50-17
d=22.71
w=2.85
145/55-17
d=23.28
w=3.14
145/60-17
d=23.85
w=3.43
145/65-17
d=24.42
w=3.71
145/70-17
d=24.99
w=4.00
145/75-17
d=25.56
w=4.28
145/80-17
d=26.13
w=4.57
145/85-17
d=26.70
w=4.85
155
155/25-17
d=20.05
w=1.53
155/30-17
d=20.66
w=1.83
155/35-17
d=21.27
w=2.14
155/40-17
d=21.88
w=2.44
155/45-17
d=22.49
w=2.75
155/50-17
d=23.10
w=3.05
155/55-17
d=23.71
w=3.36
155/60-17
d=24.32
w=3.66
155/65-17
d=24.93
w=3.97
155/70-17
d=25.54
w=4.27
155/75-17
d=26.15
w=4.58
155/80-17
d=26.76
w=4.88
155/85-17
d=27.37
w=5.19
165
165/25-17
d=20.25
w=1.62
165/30-17
d=20.90
w=1.95
165/35-17
d=21.55
w=2.27
165/40-17
d=22.20
w=2.60
165/45-17
d=22.85
w=2.92
165/50-17
d=23.50
w=3.25
165/55-17
d=24.15
w=3.57
165/60-17
d=24.80
w=3.90
165/65-17
d=25.44
w=4.22
165/70-17
d=26.09
w=4.55
165/75-17
d=26.74
w=4.87
165/80-17
d=27.39
w=5.20
165/85-17
d=28.04
w=5.52
175
175/25-17
d=20.44
w=1.72
175/30-17
d=21.13
w=2.07
175/35-17
d=21.82
w=2.41
175/40-17
d=22.51
w=2.76
175/45-17
d=23.20
w=3.10
175/50-17
d=23.89
w=3.44
175/55-17
d=24.58
w=3.79
175/60-17
d=25.27
w=4.13
175/65-17
d=25.96
w=4.48
175/70-17
d=26.65
w=4.82
175/75-17
d=27.33
w=5.17
175/80-17
d=28.02
w=5.51
175/85-17
d=28.71
w=5.86
185
185/25-17
d=20.64
w=1.82
185/30-17
d=21.37
w=2.19
185/35-17
d=22.10
w=2.55
185/40-17
d=22.83
w=2.91
185/45-17
d=23.56
w=3.28
185/50-17
d=24.28
w=3.64
185/55-17
d=25.01
w=4.01
185/60-17
d=25.74
w=4.37
185/65-17
d=26.47
w=4.73
185/70-17
d=27.20
w=5.10
185/75-17
d=27.93
w=5.46
185/80-17
d=28.65
w=5.83
185/85-17
d=29.38
w=6.19
195
195/25-17
d=20.84
w=1.92
195/30-17
d=21.61
w=2.30
195/35-17
d=22.37
w=2.69
195/40-17
d=23.14
w=3.07
195/45-17
d=23.91
w=3.45
195/50-17
d=24.68
w=3.84
195/55-17
d=25.44
w=4.22
195/60-17
d=26.21
w=4.61
195/65-17
d=26.98
w=4.99
195/70-17
d=27.75
w=5.37
195/75-17
d=28.52
w=5.76
195/80-17
d=29.28
w=6.14
195/85-17
d=30.05
w=6.53
205
205/25-17
d=21.04
w=2.02
205/30-17
d=21.84
w=2.42
205/35-17
d=22.65
w=2.82
205/40-17
d=23.46
w=3.23
205/45-17
d=24.26
w=3.63
205/50-17
d=25.07
w=4.04
205/55-17
d=25.88
w=4.44
205/60-17
d=26.69
w=4.84
205/65-17
d=27.49
w=5.25
205/70-17
d=28.30
w=5.65
205/75-17
d=29.11
w=6.05
205/80-17
d=29.91
w=6.46
205/85-17
d=30.72
w=6.86
215
215/25-17
d=21.23
w=2.12
215/30-17
d=22.08
w=2.54
215/35-17
d=22.93
w=2.96
215/40-17
d=23.77
w=3.39
215/45-17
d=24.62
w=3.81
215/50-17
d=25.46
w=4.23
215/55-17
d=26.31
w=4.66
215/60-17
d=27.16
w=5.08
215/65-17
d=28.00
w=5.50
215/70-17
d=28.85
w=5.93
215/75-17
d=29.70
w=6.35
215/80-17
d=30.54
w=6.77
215/85-17
d=31.39
w=7.19
225
225/25-17
d=21.43
w=2.21
225/30-17
d=22.31
w=2.66
225/35-17
d=23.20
w=3.10
225/40-17
d=24.09
w=3.54
225/45-17
d=24.97
w=3.99
225/50-17
d=25.86
w=4.43
225/55-17
d=26.74
w=4.87
225/60-17
d=27.63
w=5.31
225/65-17
d=28.52
w=5.76
225/70-17
d=29.40
w=6.20
225/75-17
d=30.29
w=6.64
225/80-17
d=31.17
w=7.09
225/85-17
d=32.06
w=7.53
235
235/25-17
d=21.63
w=2.31
235/30-17
d=22.55
w=2.78
235/35-17
d=23.48
w=3.24
235/40-17
d=24.40
w=3.70
235/45-17
d=25.33
w=4.16
235/50-17
d=26.25
w=4.63
235/55-17
d=27.18
w=5.09
235/60-17
d=28.10
w=5.55
235/65-17
d=29.03
w=6.01
235/70-17
d=29.95
w=6.48
235/75-17
d=30.88
w=6.94
235/80-17
d=31.80
w=7.40
235/85-17
d=32.73
w=7.86
245
245/25-17
d=21.82
w=2.41
245/30-17
d=22.79
w=2.89
245/35-17
d=23.75
w=3.38
245/40-17
d=24.72
w=3.86
245/45-17
d=25.68
w=4.34
245/50-17
d=26.65
w=4.82
245/55-17
d=27.61
w=5.31
245/60-17
d=28.57
w=5.79
245/65-17
d=29.54
w=6.27
245/70-17
d=30.50
w=6.75
245/75-17
d=31.47
w=7.23
245/80-17
d=32.43
w=7.72
245/85-17
d=33.40
w=8.20
255
255/25-17
d=22.02
w=2.51
255/30-17
d=23.02
w=3.01
255/35-17
d=24.03
w=3.51
255/40-17
d=25.03
w=4.02
255/45-17
d=26.04
w=4.52
255/50-17
d=27.04
w=5.02
255/55-17
d=28.04
w=5.52
255/60-17
d=29.05
w=6.02
255/65-17
d=30.05
w=6.53
255/70-17
d=31.06
w=7.03
255/75-17
d=32.06
w=7.53
255/80-17
d=33.06
w=8.03
255/85-17
d=34.07
w=8.53
265
265/25-17
d=22.22
w=2.61
265/30-17
d=23.26
w=3.13
265/35-17
d=24.30
w=3.65
265/40-17
d=25.35
w=4.17
265/45-17
d=26.39
w=4.69
265/50-17
d=27.43
w=5.22
265/55-17
d=28.48
w=5.74
265/60-17
d=29.52
w=6.26
265/65-17
d=30.56
w=6.78
265/70-17
d=31.61
w=7.30
265/75-17
d=32.65
w=7.82
265/80-17
d=33.69
w=8.35
265/85-17
d=34.74
w=8.87
275
275/25-17
d=22.41
w=2.71
275/30-17
d=23.50
w=3.25
275/35-17
d=24.58
w=3.79
275/40-17
d=25.66
w=4.33
275/45-17
d=26.74
w=4.87
275/50-17
d=27.83
w=5.41
275/55-17
d=28.91
w=5.95
275/60-17
d=29.99
w=6.50
275/65-17
d=31.07
w=7.04
275/70-17
d=32.16
w=7.58
275/75-17
d=33.24
w=8.12
275/80-17
d=34.32
w=8.66
275/85-17
d=35.41
w=9.20
285
285/25-17
d=22.61
w=2.81
285/30-17
d=23.73
w=3.37
285/35-17
d=24.85
w=3.93
285/40-17
d=25.98
w=4.49
285/45-17
d=27.10
w=5.05
285/50-17
d=28.22
w=5.61
285/55-17
d=29.34
w=6.17
285/60-17
d=30.46
w=6.73
285/65-17
d=31.59
w=7.29
285/70-17
d=32.71
w=7.85
285/75-17
d=33.83
w=8.42
285/80-17
d=34.95
w=8.98
285/85-17
d=36.07
w=9.54
295
295/25-17
d=22.81
w=2.90
295/30-17
d=23.97
w=3.48
295/35-17
d=25.13
w=4.06
295/40-17
d=26.29
w=4.65
295/45-17
d=27.45
w=5.23
295/50-17
d=28.61
w=5.81
295/55-17
d=29.78
w=6.39
295/60-17
d=30.94
w=6.97
295/65-17
d=32.10
w=7.55
295/70-17
d=33.26
w=8.13
295/75-17
d=34.42
w=8.71
295/80-17
d=35.58
w=9.29
295/85-17
d=36.74
w=9.87
305
305/25-17
d=23.00
w=3.00
305/30-17
d=24.20
w=3.60
305/35-17
d=25.41
w=4.20
305/40-17
d=26.61
w=4.80
305/45-17
d=27.81
w=5.40
305/50-17
d=29.01
w=6.00
305/55-17
d=30.21
w=6.60
305/60-17
d=31.41
w=7.20
305/65-17
d=32.61
w=7.81
305/70-17
d=33.81
w=8.41
305/75-17
d=35.01
w=9.01
305/80-17
d=36.21
w=9.61
305/85-17
d=37.41
w=10.21
315
315/25-17
d=23.20
w=3.10
315/30-17
d=24.44
w=3.72
315/35-17
d=25.68
w=4.34
315/40-17
d=26.92
w=4.96
315/45-17
d=28.16
w=5.58
315/50-17
d=29.40
w=6.20
315/55-17
d=30.64
w=6.82
315/60-17
d=31.88
w=7.44
315/65-17
d=33.12
w=8.06
315/70-17
d=34.36
w=8.68
315/75-17
d=35.60
w=9.30
315/80-17
d=36.84
w=9.92
315/85-17
d=38.08
w=10.54
325
325/25-17
d=23.40
w=3.20
325/30-17
d=24.68
w=3.84
325/35-17
d=25.96
w=4.48
325/40-17
d=27.24
w=5.12
325/45-17
d=28.52
w=5.76
325/50-17
d=29.80
w=6.40
325/55-17
d=31.07
w=7.04
325/60-17
d=32.35
w=7.68
325/65-17
d=33.63
w=8.32
325/70-17
d=34.91
w=8.96
325/75-17
d=36.19
w=9.60
325/80-17
d=37.47
w=10.24
325/85-17
d=38.75
w=10.88
335
335/25-17
d=23.59
w=3.30
335/30-17
d=24.91
w=3.96
335/35-17
d=26.23
w=4.62
335/40-17
d=27.55
w=5.28
335/45-17
d=28.87
w=5.94
335/50-17
d=30.19
w=6.59
335/55-17
d=31.51
w=7.25
335/60-17
d=32.83
w=7.91
335/65-17
d=34.15
w=8.57
335/70-17
d=35.46
w=9.23
335/75-17
d=36.78
w=9.89
335/80-17
d=38.10
w=10.55
335/85-17
d=39.42
w=11.21
Wheel Size 18
145
145/25-18
d=20.85
w=1.43
145/30-18
d=21.43
w=1.71
145/35-18
d=22.00
w=2.00
145/40-18
d=22.57
w=2.28
145/45-18
d=23.14
w=2.57
145/50-18
d=23.71
w=2.85
145/55-18
d=24.28
w=3.14
145/60-18
d=24.85
w=3.43
145/65-18
d=25.42
w=3.71
145/70-18
d=25.99
w=4.00
145/75-18
d=26.56
w=4.28
145/80-18
d=27.13
w=4.57
145/85-18
d=27.70
w=4.85
155
155/25-18
d=21.05
w=1.53
155/30-18
d=21.66
w=1.83
155/35-18
d=22.27
w=2.14
155/40-18
d=22.88
w=2.44
155/45-18
d=23.49
w=2.75
155/50-18
d=24.10
w=3.05
155/55-18
d=24.71
w=3.36
155/60-18
d=25.32
w=3.66
155/65-18
d=25.93
w=3.97
155/70-18
d=26.54
w=4.27
155/75-18
d=27.15
w=4.58
155/80-18
d=27.76
w=4.88
155/85-18
d=28.37
w=5.19
165
165/25-18
d=21.25
w=1.62
165/30-18
d=21.90
w=1.95
165/35-18
d=22.55
w=2.27
165/40-18
d=23.20
w=2.60
165/45-18
d=23.85
w=2.92
165/50-18
d=24.50
w=3.25
165/55-18
d=25.15
w=3.57
165/60-18
d=25.80
w=3.90
165/65-18
d=26.44
w=4.22
165/70-18
d=27.09
w=4.55
165/75-18
d=27.74
w=4.87
165/80-18
d=28.39
w=5.20
165/85-18
d=29.04
w=5.52
175
175/25-18
d=21.44
w=1.72
175/30-18
d=22.13
w=2.07
175/35-18
d=22.82
w=2.41
175/40-18
d=23.51
w=2.76
175/45-18
d=24.20
w=3.10
175/50-18
d=24.89
w=3.44
175/55-18
d=25.58
w=3.79
175/60-18
d=26.27
w=4.13
175/65-18
d=26.96
w=4.48
175/70-18
d=27.65
w=4.82
175/75-18
d=28.33
w=5.17
175/80-18
d=29.02
w=5.51
175/85-18
d=29.71
w=5.86
185
185/25-18
d=21.64
w=1.82
185/30-18
d=22.37
w=2.19
185/35-18
d=23.10
w=2.55
185/40-18
d=23.83
w=2.91
185/45-18
d=24.56
w=3.28
185/50-18
d=25.28
w=3.64
185/55-18
d=26.01
w=4.01
185/60-18
d=26.74
w=4.37
185/65-18
d=27.47
w=4.73
185/70-18
d=28.20
w=5.10
185/75-18
d=28.93
w=5.46
185/80-18
d=29.65
w=5.83
185/85-18
d=30.38
w=6.19
195
195/25-18
d=21.84
w=1.92
195/30-18
d=22.61
w=2.30
195/35-18
d=23.37
w=2.69
195/40-18
d=24.14
w=3.07
195/45-18
d=24.91
w=3.45
195/50-18
d=25.68
w=3.84
195/55-18
d=26.44
w=4.22
195/60-18
d=27.21
w=4.61
195/65-18
d=27.98
w=4.99
195/70-18
d=28.75
w=5.37
195/75-18
d=29.52
w=5.76
195/80-18
d=30.28
w=6.14
195/85-18
d=31.05
w=6.53
205
205/25-18
d=22.04
w=2.02
205/30-18
d=22.84
w=2.42
205/35-18
d=23.65
w=2.82
205/40-18
d=24.46
w=3.23
205/45-18
d=25.26
w=3.63
205/50-18
d=26.07
w=4.04
205/55-18
d=26.88
w=4.44
205/60-18
d=27.69
w=4.84
205/65-18
d=28.49
w=5.25
205/70-18
d=29.30
w=5.65
205/75-18
d=30.11
w=6.05
205/80-18
d=30.91
w=6.46
205/85-18
d=31.72
w=6.86
215
215/25-18
d=22.23
w=2.12
215/30-18
d=23.08
w=2.54
215/35-18
d=23.93
w=2.96
215/40-18
d=24.77
w=3.39
215/45-18
d=25.62
w=3.81
215/50-18
d=26.46
w=4.23
215/55-18
d=27.31
w=4.66
215/60-18
d=28.16
w=5.08
215/65-18
d=29.00
w=5.50
215/70-18
d=29.85
w=5.93
215/75-18
d=30.70
w=6.35
215/80-18
d=31.54
w=6.77
215/85-18
d=32.39
w=7.19
225
225/25-18
d=22.43
w=2.21
225/30-18
d=23.31
w=2.66
225/35-18
d=24.20
w=3.10
225/40-18
d=25.09
w=3.54
225/45-18
d=25.97
w=3.99
225/50-18
d=26.86
w=4.43
225/55-18
d=27.74
w=4.87
225/60-18
d=28.63
w=5.31
225/65-18
d=29.52
w=5.76
225/70-18
d=30.40
w=6.20
225/75-18
d=31.29
w=6.64
225/80-18
d=32.17
w=7.09
225/85-18
d=33.06
w=7.53
235
235/25-18
d=22.63
w=2.31
235/30-18
d=23.55
w=2.78
235/35-18
d=24.48
w=3.24
235/40-18
d=25.40
w=3.70
235/45-18
d=26.33
w=4.16
235/50-18
d=27.25
w=4.63
235/55-18
d=28.18
w=5.09
235/60-18
d=29.10
w=5.55
235/65-18
d=30.03
w=6.01
235/70-18
d=30.95
w=6.48
235/75-18
d=31.88
w=6.94
235/80-18
d=32.80
w=7.40
235/85-18
d=33.73
w=7.86
245
245/25-18
d=22.82
w=2.41
245/30-18
d=23.79
w=2.89
245/35-18
d=24.75
w=3.38
245/40-18
d=25.72
w=3.86
245/45-18
d=26.68
w=4.34
245/50-18
d=27.65
w=4.82
245/55-18
d=28.61
w=5.31
245/60-18
d=29.57
w=5.79
245/65-18
d=30.54
w=6.27
245/70-18
d=31.50
w=6.75
245/75-18
d=32.47
w=7.23
245/80-18
d=33.43
w=7.72
245/85-18
d=34.40
w=8.20
255
255/25-18
d=23.02
w=2.51
255/30-18
d=24.02
w=3.01
255/35-18
d=25.03
w=3.51
255/40-18
d=26.03
w=4.02
255/45-18
d=27.04
w=4.52
255/50-18
d=28.04
w=5.02
255/55-18
d=29.04
w=5.52
255/60-18
d=30.05
w=6.02
255/65-18
d=31.05
w=6.53
255/70-18
d=32.06
w=7.03
255/75-18
d=33.06
w=7.53
255/80-18
d=34.06
w=8.03
255/85-18
d=35.07
w=8.53
265
265/25-18
d=23.22
w=2.61
265/30-18
d=24.26
w=3.13
265/35-18
d=25.30
w=3.65
265/40-18
d=26.35
w=4.17
265/45-18
d=27.39
w=4.69
265/50-18
d=28.43
w=5.22
265/55-18
d=29.48
w=5.74
265/60-18
d=30.52
w=6.26
265/65-18
d=31.56
w=6.78
265/70-18
d=32.61
w=7.30
265/75-18
d=33.65
w=7.82
265/80-18
d=34.69
w=8.35
265/85-18
d=35.74
w=8.87
275
275/25-18
d=23.41
w=2.71
275/30-18
d=24.50
w=3.25
275/35-18
d=25.58
w=3.79
275/40-18
d=26.66
w=4.33
275/45-18
d=27.74
w=4.87
275/50-18
d=28.83
w=5.41
275/55-18
d=29.91
w=5.95
275/60-18
d=30.99
w=6.50
275/65-18
d=32.07
w=7.04
275/70-18
d=33.16
w=7.58
275/75-18
d=34.24
w=8.12
275/80-18
d=35.32
w=8.66
275/85-18
d=36.41
w=9.20
285
285/25-18
d=23.61
w=2.81
285/30-18
d=24.73
w=3.37
285/35-18
d=25.85
w=3.93
285/40-18
d=26.98
w=4.49
285/45-18
d=28.10
w=5.05
285/50-18
d=29.22
w=5.61
285/55-18
d=30.34
w=6.17
285/60-18
d=31.46
w=6.73
285/65-18
d=32.59
w=7.29
285/70-18
d=33.71
w=7.85
285/75-18
d=34.83
w=8.42
285/80-18
d=35.95
w=8.98
285/85-18
d=37.07
w=9.54
295
295/25-18
d=23.81
w=2.90
295/30-18
d=24.97
w=3.48
295/35-18
d=26.13
w=4.06
295/40-18
d=27.29
w=4.65
295/45-18
d=28.45
w=5.23
295/50-18
d=29.61
w=5.81
295/55-18
d=30.78
w=6.39
295/60-18
d=31.94
w=6.97
295/65-18
d=33.10
w=7.55
295/70-18
d=34.26
w=8.13
295/75-18
d=35.42
w=8.71
295/80-18
d=36.58
w=9.29
295/85-18
d=37.74
w=9.87
305
305/25-18
d=24.00
w=3.00
305/30-18
d=25.20
w=3.60
305/35-18
d=26.41
w=4.20
305/40-18
d=27.61
w=4.80
305/45-18
d=28.81
w=5.40
305/50-18
d=30.01
w=6.00
305/55-18
d=31.21
w=6.60
305/60-18
d=32.41
w=7.20
305/65-18
d=33.61
w=7.81
305/70-18
d=34.81
w=8.41
305/75-18
d=36.01
w=9.01
305/80-18
d=37.21
w=9.61
305/85-18
d=38.41
w=10.21
315
315/25-18
d=24.20
w=3.10
315/30-18
d=25.44
w=3.72
315/35-18
d=26.68
w=4.34
315/40-18
d=27.92
w=4.96
315/45-18
d=29.16
w=5.58
315/50-18
d=30.40
w=6.20
315/55-18
d=31.64
w=6.82
315/60-18
d=32.88
w=7.44
315/65-18
d=34.12
w=8.06
315/70-18
d=35.36
w=8.68
315/75-18
d=36.60
w=9.30
315/80-18
d=37.84
w=9.92
315/85-18
d=39.08
w=10.54
325
325/25-18
d=24.40
w=3.20
325/30-18
d=25.68
w=3.84
325/35-18
d=26.96
w=4.48
325/40-18
d=28.24
w=5.12
325/45-18
d=29.52
w=5.76
325/50-18
d=30.80
w=6.40
325/55-18
d=32.07
w=7.04
325/60-18
d=33.35
w=7.68
325/65-18
d=34.63
w=8.32
325/70-18
d=35.91
w=8.96
325/75-18
d=37.19
w=9.60
325/80-18
d=38.47
w=10.24
325/85-18
d=39.75
w=10.88
335
335/25-18
d=24.59
w=3.30
335/30-18
d=25.91
w=3.96
335/35-18
d=27.23
w=4.62
335/40-18
d=28.55
w=5.28
335/45-18
d=29.87
w=5.94
335/50-18
d=31.19
w=6.59
335/55-18
d=32.51
w=7.25
335/60-18
d=33.83
w=7.91
335/65-18
d=35.15
w=8.57
335/70-18
d=36.46
w=9.23
335/75-18
d=37.78
w=9.89
335/80-18
d=39.10
w=10.55
335/85-18
d=40.42
w=11.21
Wheel Size 19
Wheel Size 20
145
145/25-20
d=22.85
w=1.43
145/30-20
d=23.43
w=1.71
145/35-20
d=24.00
w=2.00
145/40-20
d=24.57
w=2.28
145/45-20
d=25.14
w=2.57
145/50-20
d=25.71
w=2.85
145/55-20
d=26.28
w=3.14
145/60-20
d=26.85
w=3.43
145/65-20
d=27.42
w=3.71
145/70-20
d=27.99
w=4.00
145/75-20
d=28.56
w=4.28
145/80-20
d=29.13
w=4.57
145/85-20
d=29.70
w=4.85
155
155/25-20
d=23.05
w=1.53
155/30-20
d=23.66
w=1.83
155/35-20
d=24.27
w=2.14
155/40-20
d=24.88
w=2.44
155/45-20
d=25.49
w=2.75
155/50-20
d=26.10
w=3.05
155/55-20
d=26.71
w=3.36
155/60-20
d=27.32
w=3.66
155/65-20
d=27.93
w=3.97
155/70-20
d=28.54
w=4.27
155/75-20
d=29.15
w=4.58
155/80-20
d=29.76
w=4.88
155/85-20
d=30.37
w=5.19
165
165/25-20
d=23.25
w=1.62
165/30-20
d=23.90
w=1.95
165/35-20
d=24.55
w=2.27
165/40-20
d=25.20
w=2.60
165/45-20
d=25.85
w=2.92
165/50-20
d=26.50
w=3.25
165/55-20
d=27.15
w=3.57
165/60-20
d=27.80
w=3.90
165/65-20
d=28.44
w=4.22
165/70-20
d=29.09
w=4.55
165/75-20
d=29.74
w=4.87
165/80-20
d=30.39
w=5.20
165/85-20
d=31.04
w=5.52
175
175/25-20
d=23.44
w=1.72
175/30-20
d=24.13
w=2.07
175/35-20
d=24.82
w=2.41
175/40-20
d=25.51
w=2.76
175/45-20
d=26.20
w=3.10
175/50-20
d=26.89
w=3.44
175/55-20
d=27.58
w=3.79
175/60-20
d=28.27
w=4.13
175/65-20
d=28.96
w=4.48
175/70-20
d=29.65
w=4.82
175/75-20
d=30.33
w=5.17
175/80-20
d=31.02
w=5.51
175/85-20
d=31.71
w=5.86
185
185/25-20
d=23.64
w=1.82
185/30-20
d=24.37
w=2.19
185/35-20
d=25.10
w=2.55
185/40-20
d=25.83
w=2.91
185/45-20
d=26.56
w=3.28
185/50-20
d=27.28
w=3.64
185/55-20
d=28.01
w=4.01
185/60-20
d=28.74
w=4.37
185/65-20
d=29.47
w=4.73
185/70-20
d=30.20
w=5.10
185/75-20
d=30.93
w=5.46
185/80-20
d=31.65
w=5.83
185/85-20
d=32.38
w=6.19
195
195/25-20
d=23.84
w=1.92
195/30-20
d=24.61
w=2.30
195/35-20
d=25.37
w=2.69
195/40-20
d=26.14
w=3.07
195/45-20
d=26.91
w=3.45
195/50-20
d=27.68
w=3.84
195/55-20
d=28.44
w=4.22
195/60-20
d=29.21
w=4.61
195/65-20
d=29.98
w=4.99
195/70-20
d=30.75
w=5.37
195/75-20
d=31.52
w=5.76
195/80-20
d=32.28
w=6.14
195/85-20
d=33.05
w=6.53
205
205/25-20
d=24.04
w=2.02
205/30-20
d=24.84
w=2.42
205/35-20
d=25.65
w=2.82
205/40-20
d=26.46
w=3.23
205/45-20
d=27.26
w=3.63
205/50-20
d=28.07
w=4.04
205/55-20
d=28.88
w=4.44
205/60-20
d=29.69
w=4.84
205/65-20
d=30.49
w=5.25
205/70-20
d=31.30
w=5.65
205/75-20
d=32.11
w=6.05
205/80-20
d=32.91
w=6.46
205/85-20
d=33.72
w=6.86
215
215/25-20
d=24.23
w=2.12
215/30-20
d=25.08
w=2.54
215/35-20
d=25.93
w=2.96
215/40-20
d=26.77
w=3.39
215/45-20
d=27.62
w=3.81
215/50-20
d=28.46
w=4.23
215/55-20
d=29.31
w=4.66
215/60-20
d=30.16
w=5.08
215/65-20
d=31.00
w=5.50
215/70-20
d=31.85
w=5.93
215/75-20
d=32.70
w=6.35
215/80-20
d=33.54
w=6.77
215/85-20
d=34.39
w=7.19
225
225/25-20
d=24.43
w=2.21
225/30-20
d=25.31
w=2.66
225/35-20
d=26.20
w=3.10
225/40-20
d=27.09
w=3.54
225/45-20
d=27.97
w=3.99
225/50-20
d=28.86
w=4.43
225/55-20
d=29.74
w=4.87
225/60-20
d=30.63
w=5.31
225/65-20
d=31.52
w=5.76
225/70-20
d=32.40
w=6.20
225/75-20
d=33.29
w=6.64
225/80-20
d=34.17
w=7.09
225/85-20
d=35.06
w=7.53
235
235/25-20
d=24.63
w=2.31
235/30-20
d=25.55
w=2.78
235/35-20
d=26.48
w=3.24
235/40-20
d=27.40
w=3.70
235/45-20
d=28.33
w=4.16
235/50-20
d=29.25
w=4.63
235/55-20
d=30.18
w=5.09
235/60-20
d=31.10
w=5.55
235/65-20
d=32.03
w=6.01
235/70-20
d=32.95
w=6.48
235/75-20
d=33.88
w=6.94
235/80-20
d=34.80
w=7.40
235/85-20
d=35.73
w=7.86
245
245/25-20
d=24.82
w=2.41
245/30-20
d=25.79
w=2.89
245/35-20
d=26.75
w=3.38
245/40-20
d=27.72
w=3.86
245/45-20
d=28.68
w=4.34
245/50-20
d=29.65
w=4.82
245/55-20
d=30.61
w=5.31
245/60-20
d=31.57
w=5.79
245/65-20
d=32.54
w=6.27
245/70-20
d=33.50
w=6.75
245/75-20
d=34.47
w=7.23
245/80-20
d=35.43
w=7.72
245/85-20
d=36.40
w=8.20
255
255/25-20
d=25.02
w=2.51
255/30-20
d=26.02
w=3.01
255/35-20
d=27.03
w=3.51
255/40-20
d=28.03
w=4.02
255/45-20
d=29.04
w=4.52
255/50-20
d=30.04
w=5.02
255/55-20
d=31.04
w=5.52
255/60-20
d=32.05
w=6.02
255/65-20
d=33.05
w=6.53
255/70-20
d=34.06
w=7.03
255/75-20
d=35.06
w=7.53
255/80-20
d=36.06
w=8.03
255/85-20
d=37.07
w=8.53
265
265/25-20
d=25.22
w=2.61
265/30-20
d=26.26
w=3.13
265/35-20
d=27.30
w=3.65
265/40-20
d=28.35
w=4.17
265/45-20
d=29.39
w=4.69
265/50-20
d=30.43
w=5.22
265/55-20
d=31.48
w=5.74
265/60-20
d=32.52
w=6.26
265/65-20
d=33.56
w=6.78
265/70-20
d=34.61
w=7.30
265/75-20
d=35.65
w=7.82
265/80-20
d=36.69
w=8.35
265/85-20
d=37.74
w=8.87
275
275/25-20
d=25.41
w=2.71
275/30-20
d=26.50
w=3.25
275/35-20
d=27.58
w=3.79
275/40-20
d=28.66
w=4.33
275/45-20
d=29.74
w=4.87
275/50-20
d=30.83
w=5.41
275/55-20
d=31.91
w=5.95
275/60-20
d=32.99
w=6.50
275/65-20
d=34.07
w=7.04
275/70-20
d=35.16
w=7.58
275/75-20
d=36.24
w=8.12
275/80-20
d=37.32
w=8.66
275/85-20
d=38.41
w=9.20
285
285/25-20
d=25.61
w=2.81
285/30-20
d=26.73
w=3.37
285/35-20
d=27.85
w=3.93
285/40-20
d=28.98
w=4.49
285/45-20
d=30.10
w=5.05
285/50-20
d=31.22
w=5.61
285/55-20
d=32.34
w=6.17
285/60-20
d=33.46
w=6.73
285/65-20
d=34.59
w=7.29
285/70-20
d=35.71
w=7.85
285/75-20
d=36.83
w=8.42
285/80-20
d=37.95
w=8.98
285/85-20
d=39.07
w=9.54
295
295/25-20
d=25.81
w=2.90
295/30-20
d=26.97
w=3.48
295/35-20
d=28.13
w=4.06
295/40-20
d=29.29
w=4.65
295/45-20
d=30.45
w=5.23
295/50-20
d=31.61
w=5.81
295/55-20
d=32.78
w=6.39
295/60-20
d=33.94
w=6.97
295/65-20
d=35.10
w=7.55
295/70-20
d=36.26
w=8.13
295/75-20
d=37.42
w=8.71
295/80-20
d=38.58
w=9.29
295/85-20
d=39.74
w=9.87
305
305/25-20
d=26.00
w=3.00
305/30-20
d=27.20
w=3.60
305/35-20
d=28.41
w=4.20
305/40-20
d=29.61
w=4.80
305/45-20
d=30.81
w=5.40
305/50-20
d=32.01
w=6.00
305/55-20
d=33.21
w=6.60
305/60-20
d=34.41
w=7.20
305/65-20
d=35.61
w=7.81
305/70-20
d=36.81
w=8.41
305/75-20
d=38.01
w=9.01
305/80-20
d=39.21
w=9.61
305/85-20
d=40.41
w=10.21
315
315/25-20
d=26.20
w=3.10
315/30-20
d=27.44
w=3.72
315/35-20
d=28.68
w=4.34
315/40-20
d=29.92
w=4.96
315/45-20
d=31.16
w=5.58
315/50-20
d=32.40
w=6.20
315/55-20
d=33.64
w=6.82
315/60-20
d=34.88
w=7.44
315/65-20
d=36.12
w=8.06
315/70-20
d=37.36
w=8.68
315/75-20
d=38.60
w=9.30
315/80-20
d=39.84
w=9.92
315/85-20
d=41.08
w=10.54
325
325/25-20
d=26.40
w=3.20
325/30-20
d=27.68
w=3.84
325/35-20
d=28.96
w=4.48
325/40-20
d=30.24
w=5.12
325/45-20
d=31.52
w=5.76
325/50-20
d=32.80
w=6.40
325/55-20
d=34.07
w=7.04
325/60-20
d=35.35
w=7.68
325/65-20
d=36.63
w=8.32
325/70-20
d=37.91
w=8.96
325/75-20
d=39.19
w=9.60
325/80-20
d=40.47
w=10.24
325/85-20
d=41.75
w=10.88
335
335/25-20
d=26.59
w=3.30
335/30-20
d=27.91
w=3.96
335/35-20
d=29.23
w=4.62
335/40-20
d=30.55
w=5.28
335/45-20
d=31.87
w=5.94
335/50-20
d=33.19
w=6.59
335/55-20
d=34.51
w=7.25
335/60-20
d=35.83
w=7.91
335/65-20
d=37.15
w=8.57
335/70-20
d=38.46
w=9.23
335/75-20
d=39.78
w=9.89
335/80-20
d=41.10
w=10.55
335/85-20
d=42.42
w=11.21
Wheel Size 21

Disclaimer:

The information on this page is intended to be helpful, but there is absolutely no guarantee of its accuracy, safety, or applicability for any particular use. The data is calculated mathematically, not taken from any official or recommended guide.

Please excercise a common sense, follow manufacturer and dealer recommendations, and check with other sources.

Tires are a safety equipment, don't take their selection lightly!