| Code | Difference | = 50mph | 1000miles = | Diameter | Wall,in | Wall,mm |
|---|---|---|---|---|---|---|
| 325/80-16.5 | +0.04 % | 50.02 | 999.57 | 36.97 | 10.24 | 260.00 |
| 305/85-16.5 | -0.12 % | 49.94 | 1,001.17 | 36.91 | 10.21 | 259.25 |
| 315/80-16.5 | -1.66 % | 49.17 | 1,016.62 | 36.34 | 9.92 | 252.00 |
| 315/85-16.5 | +1.69 % | 50.85 | 983.06 | 37.58 | 10.54 | 267.75 |
| 335/80-16.5 | +1.75 % | 50.87 | 982.53 | 37.60 | 10.55 | 268.00 |
| 335/75-16.5 | -1.82 % | 49.09 | 1,018.22 | 36.28 | 9.89 | 251.25 |
| 295/85-16.5 | -1.93 % | 49.04 | 1,019.28 | 36.24 | 9.87 | 250.75 |
| Ratio: | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Wheel Size 12
|
|||||||||||||
|
Wheel Size 13
|
|||||||||||||
|
Wheel Size 14
|
|||||||||||||
|
Wheel Size 15
|
|||||||||||||
|
Wheel Size 16
|
|||||||||||||
|
Wheel Size 16.5
|
|||||||||||||
| 145 |
145/25-16.5
d=19.35
w=1.43
-47.63%
|
145/30-16.5
d=19.93
w=1.71
-46.09%
|
145/35-16.5
d=20.50
w=2.00
-44.54%
|
145/40-16.5
d=21.07
w=2.28
-43.00%
|
145/45-16.5
d=21.64
w=2.57
-41.45%
|
145/50-16.5
d=22.21
w=2.85
-39.91%
|
145/55-16.5
d=22.78
w=3.14
-38.36%
|
145/60-16.5
d=23.35
w=3.43
-36.82%
|
145/65-16.5
d=23.92
w=3.71
-35.27%
|
145/70-16.5
d=24.49
w=4.00
-33.73%
|
145/75-16.5
d=25.06
w=4.28
-32.18%
|
145/80-16.5
d=25.63
w=4.57
-30.64%
|
145/85-16.5
d=26.20
w=4.85
-29.09%
|
| 155 |
155/25-16.5
d=19.55
w=1.53
-47.10%
|
155/30-16.5
d=20.16
w=1.83
-45.45%
|
155/35-16.5
d=20.77
w=2.14
-43.79%
|
155/40-16.5
d=21.38
w=2.44
-42.14%
|
155/45-16.5
d=21.99
w=2.75
-40.49%
|
155/50-16.5
d=22.60
w=3.05
-38.84%
|
155/55-16.5
d=23.21
w=3.36
-37.19%
|
155/60-16.5
d=23.82
w=3.66
-35.54%
|
155/65-16.5
d=24.43
w=3.97
-33.89%
|
155/70-16.5
d=25.04
w=4.27
-32.24%
|
155/75-16.5
d=25.65
w=4.58
-30.58%
|
155/80-16.5
d=26.26
w=4.88
-28.93%
|
155/85-16.5
d=26.87
w=5.19
-27.28%
|
| 165 |
165/25-16.5
d=19.75
w=1.62
-46.56%
|
165/30-16.5
d=20.40
w=1.95
-44.81%
|
165/35-16.5
d=21.05
w=2.27
-43.05%
|
165/40-16.5
d=21.70
w=2.60
-41.29%
|
165/45-16.5
d=22.35
w=2.92
-39.53%
|
165/50-16.5
d=23.00
w=3.25
-37.78%
|
165/55-16.5
d=23.65
w=3.57
-36.02%
|
165/60-16.5
d=24.30
w=3.90
-34.26%
|
165/65-16.5
d=24.94
w=4.22
-32.50%
|
165/70-16.5
d=25.59
w=4.55
-30.74%
|
165/75-16.5
d=26.24
w=4.87
-28.99%
|
165/80-16.5
d=26.89
w=5.20
-27.23%
|
165/85-16.5
d=27.54
w=5.52
-25.47%
|
| 175 |
175/25-16.5
d=19.94
w=1.72
-46.03%
|
175/30-16.5
d=20.63
w=2.07
-44.17%
|
175/35-16.5
d=21.32
w=2.41
-42.30%
|
175/40-16.5
d=22.01
w=2.76
-40.44%
|
175/45-16.5
d=22.70
w=3.10
-38.57%
|
175/50-16.5
d=23.39
w=3.44
-36.71%
|
175/55-16.5
d=24.08
w=3.79
-34.85%
|
175/60-16.5
d=24.77
w=4.13
-32.98%
|
175/65-16.5
d=25.46
w=4.48
-31.12%
|
175/70-16.5
d=26.15
w=4.82
-29.25%
|
175/75-16.5
d=26.83
w=5.17
-27.39%
|
175/80-16.5
d=27.52
w=5.51
-25.52%
|
175/85-16.5
d=28.21
w=5.86
-23.66%
|
| 185 |
185/25-16.5
d=20.14
w=1.82
-45.50%
|
185/30-16.5
d=20.87
w=2.19
-43.53%
|
185/35-16.5
d=21.60
w=2.55
-41.56%
|
185/40-16.5
d=22.33
w=2.91
-39.59%
|
185/45-16.5
d=23.06
w=3.28
-37.62%
|
185/50-16.5
d=23.78
w=3.64
-35.65%
|
185/55-16.5
d=24.51
w=4.01
-33.67%
|
185/60-16.5
d=25.24
w=4.37
-31.70%
|
185/65-16.5
d=25.97
w=4.73
-29.73%
|
185/70-16.5
d=26.70
w=5.10
-27.76%
|
185/75-16.5
d=27.43
w=5.46
-25.79%
|
185/80-16.5
d=28.15
w=5.83
-23.82%
|
185/85-16.5
d=28.88
w=6.19
-21.85%
|
| 195 |
195/25-16.5
d=20.34
w=1.92
-44.97%
|
195/30-16.5
d=21.11
w=2.30
-42.89%
|
195/35-16.5
d=21.87
w=2.69
-40.81%
|
195/40-16.5
d=22.64
w=3.07
-38.73%
|
195/45-16.5
d=23.41
w=3.45
-36.66%
|
195/50-16.5
d=24.18
w=3.84
-34.58%
|
195/55-16.5
d=24.94
w=4.22
-32.50%
|
195/60-16.5
d=25.71
w=4.61
-30.43%
|
195/65-16.5
d=26.48
w=4.99
-28.35%
|
195/70-16.5
d=27.25
w=5.37
-26.27%
|
195/75-16.5
d=28.02
w=5.76
-24.19%
|
195/80-16.5
d=28.78
w=6.14
-22.12%
|
195/85-16.5
d=29.55
w=6.53
-20.04%
|
| 205 |
205/25-16.5
d=20.54
w=2.02
-44.43%
|
205/30-16.5
d=21.34
w=2.42
-42.25%
|
205/35-16.5
d=22.15
w=2.82
-40.07%
|
205/40-16.5
d=22.96
w=3.23
-37.88%
|
205/45-16.5
d=23.76
w=3.63
-35.70%
|
205/50-16.5
d=24.57
w=4.04
-33.51%
|
205/55-16.5
d=25.38
w=4.44
-31.33%
|
205/60-16.5
d=26.19
w=4.84
-29.15%
|
205/65-16.5
d=26.99
w=5.25
-26.96%
|
205/70-16.5
d=27.80
w=5.65
-24.78%
|
205/75-16.5
d=28.61
w=6.05
-22.60%
|
205/80-16.5
d=29.41
w=6.46
-20.41%
|
205/85-16.5
d=30.22
w=6.86
-18.23%
|
| 215 |
215/25-16.5
d=20.73
w=2.12
-43.90%
|
215/30-16.5
d=21.58
w=2.54
-41.61%
|
215/35-16.5
d=22.43
w=2.96
-39.32%
|
215/40-16.5
d=23.27
w=3.39
-37.03%
|
215/45-16.5
d=24.12
w=3.81
-34.74%
|
215/50-16.5
d=24.96
w=4.23
-32.45%
|
215/55-16.5
d=25.81
w=4.66
-30.16%
|
215/60-16.5
d=26.66
w=5.08
-27.87%
|
215/65-16.5
d=27.50
w=5.50
-25.58%
|
215/70-16.5
d=28.35
w=5.93
-23.29%
|
215/75-16.5
d=29.20
w=6.35
-21.00%
|
215/80-16.5
d=30.04
w=6.77
-18.71%
|
215/85-16.5
d=30.89
w=7.19
-16.42%
|
| 225 |
225/25-16.5
d=20.93
w=2.21
-43.37%
|
225/30-16.5
d=21.81
w=2.66
-40.97%
|
225/35-16.5
d=22.70
w=3.10
-38.57%
|
225/40-16.5
d=23.59
w=3.54
-36.18%
|
225/45-16.5
d=24.47
w=3.99
-33.78%
|
225/50-16.5
d=25.36
w=4.43
-31.38%
|
225/55-16.5
d=26.24
w=4.87
-28.99%
|
225/60-16.5
d=27.13
w=5.31
-26.59%
|
225/65-16.5
d=28.02
w=5.76
-24.19%
|
225/70-16.5
d=28.90
w=6.20
-21.80%
|
225/75-16.5
d=29.79
w=6.64
-19.40%
|
225/80-16.5
d=30.67
w=7.09
-17.00%
|
225/85-16.5
d=31.56
w=7.53
-14.61%
|
| 235 |
235/25-16.5
d=21.13
w=2.31
-42.84%
|
235/30-16.5
d=22.05
w=2.78
-40.33%
|
235/35-16.5
d=22.98
w=3.24
-37.83%
|
235/40-16.5
d=23.90
w=3.70
-35.33%
|
235/45-16.5
d=24.83
w=4.16
-32.82%
|
235/50-16.5
d=25.75
w=4.63
-30.32%
|
235/55-16.5
d=26.68
w=5.09
-27.82%
|
235/60-16.5
d=27.60
w=5.55
-25.31%
|
235/65-16.5
d=28.53
w=6.01
-22.81%
|
235/70-16.5
d=29.45
w=6.48
-20.30%
|
235/75-16.5
d=30.38
w=6.94
-17.80%
|
235/80-16.5
d=31.30
w=7.40
-15.30%
|
235/85-16.5
d=32.23
w=7.86
-12.79%
|
| 245 |
245/25-16.5
d=21.32
w=2.41
-42.30%
|
245/30-16.5
d=22.29
w=2.89
-39.69%
|
245/35-16.5
d=23.25
w=3.38
-37.08%
|
245/40-16.5
d=24.22
w=3.86
-34.47%
|
245/45-16.5
d=25.18
w=4.34
-31.86%
|
245/50-16.5
d=26.15
w=4.82
-29.25%
|
245/55-16.5
d=27.11
w=5.31
-26.64%
|
245/60-16.5
d=28.07
w=5.79
-24.03%
|
245/65-16.5
d=29.04
w=6.27
-21.42%
|
245/70-16.5
d=30.00
w=6.75
-18.81%
|
245/75-16.5
d=30.97
w=7.23
-16.20%
|
245/80-16.5
d=31.93
w=7.72
-13.59%
|
245/85-16.5
d=32.90
w=8.20
-10.98%
|
| 255 |
255/25-16.5
d=21.52
w=2.51
-41.77%
|
255/30-16.5
d=22.52
w=3.01
-39.05%
|
255/35-16.5
d=23.53
w=3.51
-36.34%
|
255/40-16.5
d=24.53
w=4.02
-33.62%
|
255/45-16.5
d=25.54
w=4.52
-30.90%
|
255/50-16.5
d=26.54
w=5.02
-28.19%
|
255/55-16.5
d=27.54
w=5.52
-25.47%
|
255/60-16.5
d=28.55
w=6.02
-22.75%
|
255/65-16.5
d=29.55
w=6.53
-20.04%
|
255/70-16.5
d=30.56
w=7.03
-17.32%
|
255/75-16.5
d=31.56
w=7.53
-14.61%
|
255/80-16.5
d=32.56
w=8.03
-11.89%
|
255/85-16.5
d=33.57
w=8.53
-9.17%
|
| 265 |
265/25-16.5
d=21.72
w=2.61
-41.24%
|
265/30-16.5
d=22.76
w=3.13
-38.41%
|
265/35-16.5
d=23.80
w=3.65
-35.59%
|
265/40-16.5
d=24.85
w=4.17
-32.77%
|
265/45-16.5
d=25.89
w=4.69
-29.95%
|
265/50-16.5
d=26.93
w=5.22
-27.12%
|
265/55-16.5
d=27.98
w=5.74
-24.30%
|
265/60-16.5
d=29.02
w=6.26
-21.48%
|
265/65-16.5
d=30.06
w=6.78
-18.65%
|
265/70-16.5
d=31.11
w=7.30
-15.83%
|
265/75-16.5
d=32.15
w=7.82
-13.01%
|
265/80-16.5
d=33.19
w=8.35
-10.18%
|
265/85-16.5
d=34.24
w=8.87
-7.36%
|
| 275 |
275/25-16.5
d=21.91
w=2.71
-40.71%
|
275/30-16.5
d=23.00
w=3.25
-37.78%
|
275/35-16.5
d=24.08
w=3.79
-34.85%
|
275/40-16.5
d=25.16
w=4.33
-31.92%
|
275/45-16.5
d=26.24
w=4.87
-28.99%
|
275/50-16.5
d=27.33
w=5.41
-26.06%
|
275/55-16.5
d=28.41
w=5.95
-23.13%
|
275/60-16.5
d=29.49
w=6.50
-20.20%
|
275/65-16.5
d=30.57
w=7.04
-17.27%
|
275/70-16.5
d=31.66
w=7.58
-14.34%
|
275/75-16.5
d=32.74
w=8.12
-11.41%
|
275/80-16.5
d=33.82
w=8.66
-8.48%
|
275/85-16.5
d=34.91
w=9.20
-5.55%
|
| 285 |
285/25-16.5
d=22.11
w=2.81
-40.17%
|
285/30-16.5
d=23.23
w=3.37
-37.14%
|
285/35-16.5
d=24.35
w=3.93
-34.10%
|
285/40-16.5
d=25.48
w=4.49
-31.06%
|
285/45-16.5
d=26.60
w=5.05
-28.03%
|
285/50-16.5
d=27.72
w=5.61
-24.99%
|
285/55-16.5
d=28.84
w=6.17
-21.96%
|
285/60-16.5
d=29.96
w=6.73
-18.92%
|
285/65-16.5
d=31.09
w=7.29
-15.88%
|
285/70-16.5
d=32.21
w=7.85
-12.85%
|
285/75-16.5
d=33.33
w=8.42
-9.81%
|
285/80-16.5
d=34.45
w=8.98
-6.78%
|
285/85-16.5
d=35.57
w=9.54
-3.74%
|
| 295 |
295/25-16.5
d=22.31
w=2.90
-39.64%
|
295/30-16.5
d=23.47
w=3.48
-36.50%
|
295/35-16.5
d=24.63
w=4.06
-33.35%
|
295/40-16.5
d=25.79
w=4.65
-30.21%
|
295/45-16.5
d=26.95
w=5.23
-27.07%
|
295/50-16.5
d=28.11
w=5.81
-23.93%
|
295/55-16.5
d=29.28
w=6.39
-20.78%
|
295/60-16.5
d=30.44
w=6.97
-17.64%
|
295/65-16.5
d=31.60
w=7.55
-14.50%
|
295/70-16.5
d=32.76
w=8.13
-11.36%
|
295/75-16.5
d=33.92
w=8.71
-8.21%
|
295/80-16.5
d=35.08
w=9.29
-5.07%
|
295/85-16.5
d=36.24
w=9.87
-1.93%
|
| 305 |
305/25-16.5
d=22.50
w=3.00
-39.11%
|
305/30-16.5
d=23.70
w=3.60
-35.86%
|
305/35-16.5
d=24.91
w=4.20
-32.61%
|
305/40-16.5
d=26.11
w=4.80
-29.36%
|
305/45-16.5
d=27.31
w=5.40
-26.11%
|
305/50-16.5
d=28.51
w=6.00
-22.86%
|
305/55-16.5
d=29.71
w=6.60
-19.61%
|
305/60-16.5
d=30.91
w=7.20
-16.36%
|
305/65-16.5
d=32.11
w=7.81
-13.11%
|
305/70-16.5
d=33.31
w=8.41
-9.86%
|
305/75-16.5
d=34.51
w=9.01
-6.62%
|
305/80-16.5
d=35.71
w=9.61
-3.37%
|
305/85-16.5
d=36.91
w=10.21
-0.12%
|
| 315 |
315/25-16.5
d=22.70
w=3.10
-38.57%
|
315/30-16.5
d=23.94
w=3.72
-35.22%
|
315/35-16.5
d=25.18
w=4.34
-31.86%
|
315/40-16.5
d=26.42
w=4.96
-28.51%
|
315/45-16.5
d=27.66
w=5.58
-25.15%
|
315/50-16.5
d=28.90
w=6.20
-21.80%
|
315/55-16.5
d=30.14
w=6.82
-18.44%
|
315/60-16.5
d=31.38
w=7.44
-15.08%
|
315/65-16.5
d=32.62
w=8.06
-11.73%
|
315/70-16.5
d=33.86
w=8.68
-8.37%
|
315/75-16.5
d=35.10
w=9.30
-5.02%
|
315/80-16.5
d=36.34
w=9.92
-1.66%
|
315/85-16.5
d=37.58
w=10.54
+1.69%
|
| 325 |
325/25-16.5
d=22.90
w=3.20
-38.04%
|
325/30-16.5
d=24.18
w=3.84
-34.58%
|
325/35-16.5
d=25.46
w=4.48
-31.12%
|
325/40-16.5
d=26.74
w=5.12
-27.66%
|
325/45-16.5
d=28.02
w=5.76
-24.19%
|
325/50-16.5
d=29.30
w=6.40
-20.73%
|
325/55-16.5
d=30.57
w=7.04
-17.27%
|
325/60-16.5
d=31.85
w=7.68
-13.81%
|
325/65-16.5
d=33.13
w=8.32
-10.34%
|
325/70-16.5
d=34.41
w=8.96
-6.88%
|
325/75-16.5
d=35.69
w=9.60
-3.42%
|
325/80-16.5
d=36.97
w=10.24
+0.04%
|
325/85-16.5
d=38.25
w=10.88
+3.50%
|
| 335 |
335/25-16.5
d=23.09
w=3.30
-37.51%
|
335/30-16.5
d=24.41
w=3.96
-33.94%
|
335/35-16.5
d=25.73
w=4.62
-30.37%
|
335/40-16.5
d=27.05
w=5.28
-26.80%
|
335/45-16.5
d=28.37
w=5.94
-23.23%
|
335/50-16.5
d=29.69
w=6.59
-19.67%
|
335/55-16.5
d=31.01
w=7.25
-16.10%
|
335/60-16.5
d=32.33
w=7.91
-12.53%
|
335/65-16.5
d=33.65
w=8.57
-8.96%
|
335/70-16.5
d=34.96
w=9.23
-5.39%
|
335/75-16.5
d=36.28
w=9.89
-1.82%
|
335/80-16.5
d=37.60
w=10.55
+1.75%
|
335/85-16.5
d=38.92
w=11.21
+5.32%
|
|
Wheel Size 17
|
|||||||||||||
|
Wheel Size 18
|
|||||||||||||
|
Wheel Size 19
|
|||||||||||||
|
Wheel Size 20
|
|||||||||||||
|
Wheel Size 21
|
|||||||||||||
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!