Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 32/10.5-15 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.03 (813.54) | 30.98 (786.84) | -1.05 (-26.7) -3.3% |
| Width inches (mm) | 10.51 (267) | 10.51 (267) | 0 (0) 0% |
| Circum. inches (mm) | 100.62 (2555.81) | 97.32 (2471.93) | -3.3 (-83.88) -3.3% |
| Sidewall Height inches (mm) | 8.51 (216.27) | 7.99 (202.92) | -0.53 (-13.35) -6.2% |
| Revolutions per mile (km) | 629.68 (391.26) | 651.05 (404.54) | 21.37 (13.28) 3.4% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.34 mph (31.13 km/h) |
| 25 mph (40.23 km/h) | 24.18 mph (38.91 km/h) |
| 30 mph (48.28 km/h) | 29.02 mph (46.7 km/h) |
| 35 mph (56.33 km/h) | 33.85 mph (54.48 km/h) |
| 40 mph (64.37 km/h) | 38.69 mph (62.26 km/h) |
| 45 mph (72.42 km/h) | 43.52 mph (70.04 km/h) |
| 50 mph (80.47 km/h) | 48.36 mph (77.83 km/h) |
| 55 mph (88.51 km/h) | 53.19 mph (85.61 km/h) |
| 60 mph (96.56 km/h) | 58.03 mph (93.39 km/h) |
| 65 mph (104.61 km/h) | 62.87 mph (101.17 km/h) |
| 70 mph (112.65 km/h) | 67.7 mph (108.96 km/h) |
| 75 mph (120.7 km/h) | 72.54 mph (116.74 km/h) |
| 80 mph (128.75 km/h) | 77.37 mph (124.52 km/h) |
| 85 mph (136.79 km/h) | 82.21 mph (132.3 km/h) |
| 90 mph (144.84 km/h) | 87.05 mph (140.09 km/h) |
| 95 mph (152.89 km/h) | 91.88 mph (147.87 km/h) |
| 100 mph (160.93 km/h) | 96.72 mph (155.65 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
