Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 37/13.5-20 | 37/12.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.01 (940.18) | 37.03 (940.6) | 0.02 (0.42) 0% |
| Width inches (mm) | 13.5 (343) | 12.52 (318) | -0.98 (-25) -7.3% |
| Circum. inches (mm) | 116.29 (2953.66) | 116.34 (2954.98) | 0.05 (1.32) 0% |
| Sidewall Height inches (mm) | 8.51 (216.09) | 10.02 (254.4) | 1.51 (38.31) 17.7% |
| Revolutions per mile (km) | 544.86 (338.56) | 544.62 (338.41) | -0.24 (-0.15) -0% |
37/12.5-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.01 mph (32.2 km/h) |
| 25 mph (40.23 km/h) | 25.01 mph (40.25 km/h) |
| 30 mph (48.28 km/h) | 30.01 mph (48.3 km/h) |
| 35 mph (56.33 km/h) | 35.02 mph (56.35 km/h) |
| 40 mph (64.37 km/h) | 40.02 mph (64.4 km/h) |
| 45 mph (72.42 km/h) | 45.02 mph (72.45 km/h) |
| 50 mph (80.47 km/h) | 50.02 mph (80.5 km/h) |
| 55 mph (88.51 km/h) | 55.02 mph (88.55 km/h) |
| 60 mph (96.56 km/h) | 60.03 mph (96.6 km/h) |
| 65 mph (104.61 km/h) | 65.03 mph (104.65 km/h) |
| 70 mph (112.65 km/h) | 70.03 mph (112.7 km/h) |
| 75 mph (120.7 km/h) | 75.03 mph (120.75 km/h) |
| 80 mph (128.75 km/h) | 80.04 mph (128.81 km/h) |
| 85 mph (136.79 km/h) | 85.04 mph (136.86 km/h) |
| 90 mph (144.84 km/h) | 90.04 mph (144.91 km/h) |
| 95 mph (152.89 km/h) | 95.04 mph (152.96 km/h) |
| 100 mph (160.93 km/h) | 100.04 mph (161.01 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1386 | 1610 | 1734 | 1811 | 1893 | 1952 | 2017 | 2094 | 2200 | 2306 | 2424 | 2518 | 2689 | 2878 | 3026 | 3120 | 3173 | 3368 | 3639 | 4229 |
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