Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/70-18 | 35/12.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.16 (842.2) | 35.03 (889.68) | 1.87 (47.48) 5.6% |
| Width inches (mm) | 10.83 (275) | 12.52 (318) | 1.69 (43) 15.6% |
| Circum. inches (mm) | 104.17 (2645.85) | 110.04 (2795.01) | 5.87 (149.16) 5.6% |
| Sidewall Height inches (mm) | 7.58 (192.5) | 8.51 (216.24) | 0.93 (23.74) 12.3% |
| Revolutions per mile (km) | 608.25 (377.95) | 575.79 (357.78) | -32.46 (-20.17) -5.3% |
35/12.5-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.13 mph (34 km/h) |
| 25 mph (40.23 km/h) | 26.41 mph (42.5 km/h) |
| 30 mph (48.28 km/h) | 31.69 mph (51 km/h) |
| 35 mph (56.33 km/h) | 36.97 mph (59.5 km/h) |
| 40 mph (64.37 km/h) | 42.26 mph (68 km/h) |
| 45 mph (72.42 km/h) | 47.54 mph (76.5 km/h) |
| 50 mph (80.47 km/h) | 52.82 mph (85 km/h) |
| 55 mph (88.51 km/h) | 58.1 mph (93.5 km/h) |
| 60 mph (96.56 km/h) | 63.38 mph (102 km/h) |
| 65 mph (104.61 km/h) | 68.66 mph (110.5 km/h) |
| 70 mph (112.65 km/h) | 73.95 mph (119.01 km/h) |
| 75 mph (120.7 km/h) | 79.23 mph (127.51 km/h) |
| 80 mph (128.75 km/h) | 84.51 mph (136.01 km/h) |
| 85 mph (136.79 km/h) | 89.79 mph (144.51 km/h) |
| 90 mph (144.84 km/h) | 95.07 mph (153.01 km/h) |
| 95 mph (152.89 km/h) | 100.36 mph (161.51 km/h) |
| 100 mph (160.93 km/h) | 105.64 mph (170.01 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 |
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