Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/60-18 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.46 (799.2) | 33.16 (842.2) | 1.69 (43) 5.4% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 98.85 (2510.76) | 104.17 (2645.85) | 5.32 (135.09) 5.4% |
| Sidewall Height inches (mm) | 6.73 (171) | 7.58 (192.5) | 0.85 (21.5) 12.6% |
| Revolutions per mile (km) | 640.98 (398.28) | 608.25 (377.95) | -32.73 (-20.34) -5.1% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.08 mph (33.92 km/h) |
| 25 mph (40.23 km/h) | 26.35 mph (42.4 km/h) |
| 30 mph (48.28 km/h) | 31.61 mph (50.88 km/h) |
| 35 mph (56.33 km/h) | 36.88 mph (59.36 km/h) |
| 40 mph (64.37 km/h) | 42.15 mph (67.84 km/h) |
| 45 mph (72.42 km/h) | 47.42 mph (76.32 km/h) |
| 50 mph (80.47 km/h) | 52.69 mph (84.8 km/h) |
| 55 mph (88.51 km/h) | 57.96 mph (93.28 km/h) |
| 60 mph (96.56 km/h) | 63.23 mph (101.76 km/h) |
| 65 mph (104.61 km/h) | 68.5 mph (110.24 km/h) |
| 70 mph (112.65 km/h) | 73.77 mph (118.72 km/h) |
| 75 mph (120.7 km/h) | 79.04 mph (127.2 km/h) |
| 80 mph (128.75 km/h) | 84.3 mph (135.67 km/h) |
| 85 mph (136.79 km/h) | 89.57 mph (144.15 km/h) |
| 90 mph (144.84 km/h) | 94.84 mph (152.63 km/h) |
| 95 mph (152.89 km/h) | 100.11 mph (161.11 km/h) |
| 100 mph (160.93 km/h) | 105.38 mph (169.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1548 | 1798 | 1937 | 2022 | 2114 | 2180 | 2253 | 2338 | 2457 | 2575 | 2707 | 2813 | 3004 | 3214 | 3379 | 3484 | 3544 | 3761 | 4064 | 4723 |
Better Fuel Economy Factory Ratios Increased Power
