Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 270/75-18 | 35/12.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.94 (862.2) | 35.03 (889.68) | 1.08 (27.48) 3.2% |
| Width inches (mm) | 10.63 (270) | 12.52 (318) | 1.89 (48) 17.8% |
| Circum. inches (mm) | 106.64 (2708.68) | 110.04 (2795.01) | 3.4 (86.33) 3.2% |
| Sidewall Height inches (mm) | 7.97 (202.5) | 8.51 (216.24) | 0.54 (13.74) 6.8% |
| Revolutions per mile (km) | 594.14 (369.18) | 575.79 (357.78) | -18.35 (-11.4) -3.1% |
35/12.5-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.64 mph (33.21 km/h) |
| 25 mph (40.23 km/h) | 25.8 mph (41.52 km/h) |
| 30 mph (48.28 km/h) | 30.96 mph (49.82 km/h) |
| 35 mph (56.33 km/h) | 36.12 mph (58.12 km/h) |
| 40 mph (64.37 km/h) | 41.27 mph (66.43 km/h) |
| 45 mph (72.42 km/h) | 46.43 mph (74.73 km/h) |
| 50 mph (80.47 km/h) | 51.59 mph (83.03 km/h) |
| 55 mph (88.51 km/h) | 56.75 mph (91.34 km/h) |
| 60 mph (96.56 km/h) | 61.91 mph (99.64 km/h) |
| 65 mph (104.61 km/h) | 67.07 mph (107.94 km/h) |
| 70 mph (112.65 km/h) | 72.23 mph (116.24 km/h) |
| 75 mph (120.7 km/h) | 77.39 mph (124.55 km/h) |
| 80 mph (128.75 km/h) | 82.55 mph (132.85 km/h) |
| 85 mph (136.79 km/h) | 87.71 mph (141.15 km/h) |
| 90 mph (144.84 km/h) | 92.87 mph (149.46 km/h) |
| 95 mph (152.89 km/h) | 98.03 mph (157.76 km/h) |
| 100 mph (160.93 km/h) | 103.19 mph (166.06 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1465 | 1702 | 1833 | 1914 | 2002 | 2064 | 2132 | 2214 | 2326 | 2438 | 2563 | 2662 | 2843 | 3043 | 3199 | 3298 | 3355 | 3560 | 3847 | 4471 |
Better Fuel Economy Factory Ratios Increased Power
