Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-15 | 32/11.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.71 (780) | 32.01 (813.16) | 1.31 (33.16) 4.3% |
| Width inches (mm) | 11.22 (285) | 11.5 (292) | 0.28 (7) 2.5% |
| Circum. inches (mm) | 96.47 (2450.44) | 100.58 (2554.62) | 4.1 (104.18) 4.3% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 8.51 (216.08) | 0.65 (16.58) 8.3% |
| Revolutions per mile (km) | 656.76 (408.09) | 629.97 (391.45) | -26.78 (-16.64) -4.1% |
32/11.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.85 mph (33.56 km/h) |
| 25 mph (40.23 km/h) | 26.06 mph (41.94 km/h) |
| 30 mph (48.28 km/h) | 31.28 mph (50.33 km/h) |
| 35 mph (56.33 km/h) | 36.49 mph (58.72 km/h) |
| 40 mph (64.37 km/h) | 41.7 mph (67.11 km/h) |
| 45 mph (72.42 km/h) | 46.91 mph (75.5 km/h) |
| 50 mph (80.47 km/h) | 52.13 mph (83.89 km/h) |
| 55 mph (88.51 km/h) | 57.34 mph (92.28 km/h) |
| 60 mph (96.56 km/h) | 62.55 mph (100.67 km/h) |
| 65 mph (104.61 km/h) | 67.76 mph (109.05 km/h) |
| 70 mph (112.65 km/h) | 72.98 mph (117.44 km/h) |
| 75 mph (120.7 km/h) | 78.19 mph (125.83 km/h) |
| 80 mph (128.75 km/h) | 83.4 mph (134.22 km/h) |
| 85 mph (136.79 km/h) | 88.61 mph (142.61 km/h) |
| 90 mph (144.84 km/h) | 93.83 mph (151 km/h) |
| 95 mph (152.89 km/h) | 99.04 mph (159.39 km/h) |
| 100 mph (160.93 km/h) | 104.25 mph (167.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1603 | 1862 | 2006 | 2094 | 2190 | 2258 | 2333 | 2422 | 2545 | 2667 | 2804 | 2913 | 3111 | 3329 | 3500 | 3609 | 3670 | 3895 | 4209 | 4891 |
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