Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/70-17 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.61 (802.8) | 33.16 (842.2) | 1.55 (39.4) 4.9% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 99.29 (2522.07) | 104.17 (2645.85) | 4.87 (123.78) 4.9% |
| Sidewall Height inches (mm) | 7.3 (185.5) | 7.58 (192.5) | 0.28 (7) 3.8% |
| Revolutions per mile (km) | 638.1 (396.5) | 608.25 (377.95) | -29.85 (-18.55) -4.7% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.98 mph (33.77 km/h) |
| 25 mph (40.23 km/h) | 26.23 mph (42.21 km/h) |
| 30 mph (48.28 km/h) | 31.47 mph (50.65 km/h) |
| 35 mph (56.33 km/h) | 36.72 mph (59.09 km/h) |
| 40 mph (64.37 km/h) | 41.96 mph (67.53 km/h) |
| 45 mph (72.42 km/h) | 47.21 mph (75.97 km/h) |
| 50 mph (80.47 km/h) | 52.45 mph (84.42 km/h) |
| 55 mph (88.51 km/h) | 57.7 mph (92.86 km/h) |
| 60 mph (96.56 km/h) | 62.94 mph (101.3 km/h) |
| 65 mph (104.61 km/h) | 68.19 mph (109.74 km/h) |
| 70 mph (112.65 km/h) | 73.44 mph (118.18 km/h) |
| 75 mph (120.7 km/h) | 78.68 mph (126.62 km/h) |
| 80 mph (128.75 km/h) | 83.93 mph (135.07 km/h) |
| 85 mph (136.79 km/h) | 89.17 mph (143.51 km/h) |
| 90 mph (144.84 km/h) | 94.42 mph (151.95 km/h) |
| 95 mph (152.89 km/h) | 99.66 mph (160.39 km/h) |
| 100 mph (160.93 km/h) | 104.91 mph (168.83 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
