Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/75-17 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.83 (859.3) | 33.16 (842.2) | -0.67 (-17.1) -2% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 106.28 (2699.57) | 104.17 (2645.85) | -2.12 (-53.72) -2% |
| Sidewall Height inches (mm) | 8.42 (213.75) | 7.58 (192.5) | -0.84 (-21.25) -9.9% |
| Revolutions per mile (km) | 596.15 (370.43) | 608.25 (377.95) | 12.1 (7.52) 2% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.6 mph (31.55 km/h) |
| 25 mph (40.23 km/h) | 24.5 mph (39.43 km/h) |
| 30 mph (48.28 km/h) | 29.4 mph (47.32 km/h) |
| 35 mph (56.33 km/h) | 34.3 mph (55.21 km/h) |
| 40 mph (64.37 km/h) | 39.2 mph (63.09 km/h) |
| 45 mph (72.42 km/h) | 44.1 mph (70.98 km/h) |
| 50 mph (80.47 km/h) | 49.01 mph (78.87 km/h) |
| 55 mph (88.51 km/h) | 53.91 mph (86.75 km/h) |
| 60 mph (96.56 km/h) | 58.81 mph (94.64 km/h) |
| 65 mph (104.61 km/h) | 63.71 mph (102.53 km/h) |
| 70 mph (112.65 km/h) | 68.61 mph (110.41 km/h) |
| 75 mph (120.7 km/h) | 73.51 mph (118.3 km/h) |
| 80 mph (128.75 km/h) | 78.41 mph (126.19 km/h) |
| 85 mph (136.79 km/h) | 83.31 mph (134.07 km/h) |
| 90 mph (144.84 km/h) | 88.21 mph (141.96 km/h) |
| 95 mph (152.89 km/h) | 93.11 mph (149.85 km/h) |
| 100 mph (160.93 km/h) | 98.01 mph (157.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
