Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 32/11.5-15 | 31/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.01 (813.16) | 30.98 (786.84) | -1.04 (-26.32) -3.2% |
| Width inches (mm) | 11.5 (292) | 10.51 (267) | -0.98 (-25) -8.6% |
| Circum. inches (mm) | 100.58 (2554.62) | 97.32 (2471.93) | -3.26 (-82.69) -3.2% |
| Sidewall Height inches (mm) | 8.51 (216.08) | 7.99 (202.92) | -0.52 (-13.16) -6.1% |
| Revolutions per mile (km) | 629.97 (391.45) | 651.05 (404.54) | 21.07 (13.09) 3.3% |
31/10.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.35 mph (31.15 km/h) |
| 25 mph (40.23 km/h) | 24.19 mph (38.93 km/h) |
| 30 mph (48.28 km/h) | 29.03 mph (46.72 km/h) |
| 35 mph (56.33 km/h) | 33.87 mph (54.5 km/h) |
| 40 mph (64.37 km/h) | 38.71 mph (62.29 km/h) |
| 45 mph (72.42 km/h) | 43.54 mph (70.08 km/h) |
| 50 mph (80.47 km/h) | 48.38 mph (77.86 km/h) |
| 55 mph (88.51 km/h) | 53.22 mph (85.65 km/h) |
| 60 mph (96.56 km/h) | 58.06 mph (93.44 km/h) |
| 65 mph (104.61 km/h) | 62.9 mph (101.22 km/h) |
| 70 mph (112.65 km/h) | 67.73 mph (109.01 km/h) |
| 75 mph (120.7 km/h) | 72.57 mph (116.79 km/h) |
| 80 mph (128.75 km/h) | 77.41 mph (124.58 km/h) |
| 85 mph (136.79 km/h) | 82.25 mph (132.37 km/h) |
| 90 mph (144.84 km/h) | 87.09 mph (140.15 km/h) |
| 95 mph (152.89 km/h) | 91.93 mph (147.94 km/h) |
| 100 mph (160.93 km/h) | 96.76 mph (155.73 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
