Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/35-20 | 155/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.68 (728.5) | 28.98 (736.2) | 0.3 (7.7) 1.1% |
| Width inches (mm) | 12.4 (315) | 6.1 (155) | -6.3 (-160) -50.8% |
| Circum. inches (mm) | 90.1 (2288.65) | 91.06 (2312.84) | 0.95 (24.19) 1.1% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 5.49 (139.5) | 1.15 (29.25) 26.5% |
| Revolutions per mile (km) | 703.18 (436.94) | 695.83 (432.37) | -7.35 (-4.57) -1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.21 mph (32.53 km/h) |
| 25 mph (40.23 km/h) | 25.26 mph (40.66 km/h) |
| 30 mph (48.28 km/h) | 30.32 mph (48.79 km/h) |
| 35 mph (56.33 km/h) | 35.37 mph (56.92 km/h) |
| 40 mph (64.37 km/h) | 40.42 mph (65.05 km/h) |
| 45 mph (72.42 km/h) | 45.48 mph (73.19 km/h) |
| 50 mph (80.47 km/h) | 50.53 mph (81.32 km/h) |
| 55 mph (88.51 km/h) | 55.58 mph (89.45 km/h) |
| 60 mph (96.56 km/h) | 60.63 mph (97.58 km/h) |
| 65 mph (104.61 km/h) | 65.69 mph (105.71 km/h) |
| 70 mph (112.65 km/h) | 70.74 mph (113.85 km/h) |
| 75 mph (120.7 km/h) | 75.79 mph (121.98 km/h) |
| 80 mph (128.75 km/h) | 80.85 mph (130.11 km/h) |
| 85 mph (136.79 km/h) | 85.9 mph (138.24 km/h) |
| 90 mph (144.84 km/h) | 90.95 mph (146.37 km/h) |
| 95 mph (152.89 km/h) | 96 mph (154.5 km/h) |
| 100 mph (160.93 km/h) | 101.06 mph (162.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1771 | 2057 | 2215 | 2313 | 2419 | 2494 | 2577 | 2675 | 2811 | 2946 | 3097 | 3217 | 3436 | 3677 | 3866 | 3986 | 4054 | 4303 | 4649 | 5403 |
Better Fuel Economy Factory Ratios Increased Power
