Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 32/10.5-17 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.93 (810.94) | 30.98 (786.84) | -0.95 (-24.1) -3% |
| Width inches (mm) | 10.51 (267) | 10.51 (267) | 0 (0) 0% |
| Circum. inches (mm) | 100.3 (2547.64) | 97.32 (2471.93) | -2.98 (-75.71) -3% |
| Sidewall Height inches (mm) | 7.46 (189.57) | 7.99 (202.92) | 0.53 (13.35) 7% |
| Revolutions per mile (km) | 631.7 (392.52) | 651.05 (404.54) | 19.35 (12.02) 3.1% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.41 mph (31.23 km/h) |
| 25 mph (40.23 km/h) | 24.26 mph (39.04 km/h) |
| 30 mph (48.28 km/h) | 29.11 mph (46.85 km/h) |
| 35 mph (56.33 km/h) | 33.96 mph (54.65 km/h) |
| 40 mph (64.37 km/h) | 38.81 mph (62.46 km/h) |
| 45 mph (72.42 km/h) | 43.66 mph (70.27 km/h) |
| 50 mph (80.47 km/h) | 48.51 mph (78.08 km/h) |
| 55 mph (88.51 km/h) | 53.37 mph (85.88 km/h) |
| 60 mph (96.56 km/h) | 58.22 mph (93.69 km/h) |
| 65 mph (104.61 km/h) | 63.07 mph (101.5 km/h) |
| 70 mph (112.65 km/h) | 67.92 mph (109.31 km/h) |
| 75 mph (120.7 km/h) | 72.77 mph (117.11 km/h) |
| 80 mph (128.75 km/h) | 77.62 mph (124.92 km/h) |
| 85 mph (136.79 km/h) | 82.47 mph (132.73 km/h) |
| 90 mph (144.84 km/h) | 87.33 mph (140.54 km/h) |
| 95 mph (152.89 km/h) | 92.18 mph (148.34 km/h) |
| 100 mph (160.93 km/h) | 97.03 mph (156.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1657 | 1925 | 2073 | 2164 | 2263 | 2334 | 2411 | 2503 | 2630 | 2757 | 2898 | 3010 | 3215 | 3440 | 3617 | 3730 | 3793 | 4026 | 4350 | 5055 |
Better Fuel Economy Factory Ratios Increased Power
