Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/35-18 | 255/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.85 (656.7) | 23.03 (585) | -2.82 (-71.7) -10.9% |
| Width inches (mm) | 11.22 (285) | 10.04 (255) | -1.18 (-30) -10.5% |
| Circum. inches (mm) | 81.22 (2063.08) | 72.36 (1837.83) | -8.87 (-225.25) -10.9% |
| Sidewall Height inches (mm) | 3.93 (99.75) | 4.02 (102) | 0.09 (2.25) 2.3% |
| Revolutions per mile (km) | 780.07 (484.71) | 875.68 (544.12) | 95.61 (59.41) 12.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.82 mph (28.67 km/h) |
| 25 mph (40.23 km/h) | 22.27 mph (35.84 km/h) |
| 30 mph (48.28 km/h) | 26.72 mph (43.01 km/h) |
| 35 mph (56.33 km/h) | 31.18 mph (50.18 km/h) |
| 40 mph (64.37 km/h) | 35.63 mph (57.35 km/h) |
| 45 mph (72.42 km/h) | 40.09 mph (64.51 km/h) |
| 50 mph (80.47 km/h) | 44.54 mph (71.68 km/h) |
| 55 mph (88.51 km/h) | 48.99 mph (78.85 km/h) |
| 60 mph (96.56 km/h) | 53.45 mph (86.02 km/h) |
| 65 mph (104.61 km/h) | 57.9 mph (93.19 km/h) |
| 70 mph (112.65 km/h) | 62.36 mph (100.35 km/h) |
| 75 mph (120.7 km/h) | 66.81 mph (107.52 km/h) |
| 80 mph (128.75 km/h) | 71.27 mph (114.69 km/h) |
| 85 mph (136.79 km/h) | 75.72 mph (121.86 km/h) |
| 90 mph (144.84 km/h) | 80.17 mph (129.03 km/h) |
| 95 mph (152.89 km/h) | 84.63 mph (136.2 km/h) |
| 100 mph (160.93 km/h) | 89.08 mph (143.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2228 | 2589 | 2788 | 2911 | 3044 | 3139 | 3243 | 3366 | 3537 | 3708 | 3897 | 4049 | 4324 | 4628 | 4865 | 5016 | 5102 | 5415 | 5851 | 6799 |
Better Fuel Economy Factory Ratios Increased Power
