Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/60-18 | 35/12.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.41 (823.2) | 35.03 (889.68) | 2.62 (66.48) 8.1% |
| Width inches (mm) | 12.01 (305) | 12.52 (318) | 0.51 (13) 4.3% |
| Circum. inches (mm) | 101.82 (2586.16) | 110.04 (2795.01) | 8.22 (208.85) 8.1% |
| Sidewall Height inches (mm) | 7.2 (183) | 8.51 (216.24) | 1.31 (33.24) 18.2% |
| Revolutions per mile (km) | 622.29 (386.67) | 575.79 (357.78) | -46.5 (-28.89) -7.5% |
35/12.5-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.62 mph (34.79 km/h) |
| 25 mph (40.23 km/h) | 27.02 mph (43.48 km/h) |
| 30 mph (48.28 km/h) | 32.42 mph (52.18 km/h) |
| 35 mph (56.33 km/h) | 37.83 mph (60.88 km/h) |
| 40 mph (64.37 km/h) | 43.23 mph (69.57 km/h) |
| 45 mph (72.42 km/h) | 48.63 mph (78.27 km/h) |
| 50 mph (80.47 km/h) | 54.04 mph (86.97 km/h) |
| 55 mph (88.51 km/h) | 59.44 mph (95.66 km/h) |
| 60 mph (96.56 km/h) | 64.85 mph (104.36 km/h) |
| 65 mph (104.61 km/h) | 70.25 mph (113.06 km/h) |
| 70 mph (112.65 km/h) | 75.65 mph (121.75 km/h) |
| 75 mph (120.7 km/h) | 81.06 mph (130.45 km/h) |
| 80 mph (128.75 km/h) | 86.46 mph (139.15 km/h) |
| 85 mph (136.79 km/h) | 91.86 mph (147.84 km/h) |
| 90 mph (144.84 km/h) | 97.27 mph (156.54 km/h) |
| 95 mph (152.89 km/h) | 102.67 mph (165.23 km/h) |
| 100 mph (160.93 km/h) | 108.08 mph (173.93 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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