Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/55-16 | 315/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.39 (670.4) | 36.08 (916.5) | 9.69 (246.1) 36.7% |
| Width inches (mm) | 9.45 (240) | 12.4 (315) | 2.95 (75) 31.3% |
| Circum. inches (mm) | 82.92 (2106.12) | 113.36 (2879.27) | 30.44 (773.15) 36.7% |
| Sidewall Height inches (mm) | 5.2 (132) | 10.54 (267.75) | 5.34 (135.75) 102.8% |
| Revolutions per mile (km) | 764.13 (474.81) | 558.94 (347.31) | -205.18 (-127.5) -26.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.34 mph (44 km/h) |
| 25 mph (40.23 km/h) | 34.18 mph (55 km/h) |
| 30 mph (48.28 km/h) | 41.01 mph (66 km/h) |
| 35 mph (56.33 km/h) | 47.85 mph (77 km/h) |
| 40 mph (64.37 km/h) | 54.68 mph (88.01 km/h) |
| 45 mph (72.42 km/h) | 61.52 mph (99.01 km/h) |
| 50 mph (80.47 km/h) | 68.35 mph (110.01 km/h) |
| 55 mph (88.51 km/h) | 75.19 mph (121.01 km/h) |
| 60 mph (96.56 km/h) | 82.03 mph (132.01 km/h) |
| 65 mph (104.61 km/h) | 88.86 mph (143.01 km/h) |
| 70 mph (112.65 km/h) | 95.7 mph (154.01 km/h) |
| 75 mph (120.7 km/h) | 102.53 mph (165.01 km/h) |
| 80 mph (128.75 km/h) | 109.37 mph (176.01 km/h) |
| 85 mph (136.79 km/h) | 116.2 mph (187.01 km/h) |
| 90 mph (144.84 km/h) | 123.04 mph (198.01 km/h) |
| 95 mph (152.89 km/h) | 129.87 mph (209.01 km/h) |
| 100 mph (160.93 km/h) | 136.71 mph (220.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1422 | 1652 | 1780 | 1858 | 1943 | 2003 | 2070 | 2149 | 2258 | 2367 | 2488 | 2585 | 2760 | 2954 | 3105 | 3202 | 3256 | 3456 | 3735 | 4340 |
Better Fuel Economy Factory Ratios Increased Power
