Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/60-15 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (711) | 30.98 (786.84) | 2.99 (75.84) 10.7% |
| Width inches (mm) | 10.83 (275) | 10.51 (267) | -0.31 (-8) -2.9% |
| Circum. inches (mm) | 87.94 (2233.67) | 97.32 (2471.93) | 9.38 (238.26) 10.7% |
| Sidewall Height inches (mm) | 6.5 (165) | 7.99 (202.92) | 1.49 (37.92) 23% |
| Revolutions per mile (km) | 720.49 (447.69) | 651.05 (404.54) | -69.45 (-43.15) -9.6% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.13 mph (35.62 km/h) |
| 25 mph (40.23 km/h) | 27.67 mph (44.53 km/h) |
| 30 mph (48.28 km/h) | 33.2 mph (53.43 km/h) |
| 35 mph (56.33 km/h) | 38.73 mph (62.34 km/h) |
| 40 mph (64.37 km/h) | 44.27 mph (71.24 km/h) |
| 45 mph (72.42 km/h) | 49.8 mph (80.15 km/h) |
| 50 mph (80.47 km/h) | 55.33 mph (89.05 km/h) |
| 55 mph (88.51 km/h) | 60.87 mph (97.96 km/h) |
| 60 mph (96.56 km/h) | 66.4 mph (106.86 km/h) |
| 65 mph (104.61 km/h) | 71.93 mph (115.77 km/h) |
| 70 mph (112.65 km/h) | 77.47 mph (124.67 km/h) |
| 75 mph (120.7 km/h) | 83 mph (133.58 km/h) |
| 80 mph (128.75 km/h) | 88.53 mph (142.48 km/h) |
| 85 mph (136.79 km/h) | 94.07 mph (151.39 km/h) |
| 90 mph (144.84 km/h) | 99.6 mph (160.29 km/h) |
| 95 mph (152.89 km/h) | 105.13 mph (169.2 km/h) |
| 100 mph (160.93 km/h) | 110.67 mph (178.1 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
