Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/60-18 | 35/12.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.35 (847.2) | 35.03 (889.68) | 1.67 (42.48) 5% |
| Width inches (mm) | 12.8 (325) | 12.52 (318) | -0.28 (-7) -2.2% |
| Circum. inches (mm) | 104.79 (2661.56) | 110.04 (2795.01) | 5.25 (133.45) 5% |
| Sidewall Height inches (mm) | 7.68 (195) | 8.51 (216.24) | 0.84 (21.24) 10.9% |
| Revolutions per mile (km) | 604.66 (375.72) | 575.79 (357.78) | -28.87 (-17.94) -4.8% |
35/12.5-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21 mph (33.8 km/h) |
| 25 mph (40.23 km/h) | 26.25 mph (42.25 km/h) |
| 30 mph (48.28 km/h) | 31.5 mph (50.7 km/h) |
| 35 mph (56.33 km/h) | 36.75 mph (59.15 km/h) |
| 40 mph (64.37 km/h) | 42.01 mph (67.6 km/h) |
| 45 mph (72.42 km/h) | 47.26 mph (76.05 km/h) |
| 50 mph (80.47 km/h) | 52.51 mph (84.5 km/h) |
| 55 mph (88.51 km/h) | 57.76 mph (92.95 km/h) |
| 60 mph (96.56 km/h) | 63.01 mph (101.4 km/h) |
| 65 mph (104.61 km/h) | 68.26 mph (109.85 km/h) |
| 70 mph (112.65 km/h) | 73.51 mph (118.3 km/h) |
| 75 mph (120.7 km/h) | 78.76 mph (126.75 km/h) |
| 80 mph (128.75 km/h) | 84.01 mph (135.2 km/h) |
| 85 mph (136.79 km/h) | 89.26 mph (143.65 km/h) |
| 90 mph (144.84 km/h) | 94.51 mph (152.1 km/h) |
| 95 mph (152.89 km/h) | 99.76 mph (160.55 km/h) |
| 100 mph (160.93 km/h) | 105.01 mph (169 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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