Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/65-18 | 35/12.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.07 (814.7) | 35.03 (889.68) | 2.95 (74.98) 9.2% |
| Width inches (mm) | 10.83 (275) | 12.52 (318) | 1.69 (43) 15.6% |
| Circum. inches (mm) | 100.77 (2559.46) | 110.04 (2795.01) | 9.27 (235.56) 9.2% |
| Sidewall Height inches (mm) | 7.04 (178.75) | 8.51 (216.24) | 1.48 (37.49) 21% |
| Revolutions per mile (km) | 628.78 (390.71) | 575.79 (357.78) | -52.99 (-32.93) -8.4% |
35/12.5-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.84 mph (35.15 km/h) |
| 25 mph (40.23 km/h) | 27.3 mph (43.94 km/h) |
| 30 mph (48.28 km/h) | 32.76 mph (52.72 km/h) |
| 35 mph (56.33 km/h) | 38.22 mph (61.51 km/h) |
| 40 mph (64.37 km/h) | 43.68 mph (70.3 km/h) |
| 45 mph (72.42 km/h) | 49.14 mph (79.09 km/h) |
| 50 mph (80.47 km/h) | 54.6 mph (87.87 km/h) |
| 55 mph (88.51 km/h) | 60.06 mph (96.66 km/h) |
| 60 mph (96.56 km/h) | 65.52 mph (105.45 km/h) |
| 65 mph (104.61 km/h) | 70.98 mph (114.24 km/h) |
| 70 mph (112.65 km/h) | 76.44 mph (123.02 km/h) |
| 75 mph (120.7 km/h) | 81.9 mph (131.81 km/h) |
| 80 mph (128.75 km/h) | 87.36 mph (140.6 km/h) |
| 85 mph (136.79 km/h) | 92.82 mph (149.38 km/h) |
| 90 mph (144.84 km/h) | 98.28 mph (158.17 km/h) |
| 95 mph (152.89 km/h) | 103.74 mph (166.96 km/h) |
| 100 mph (160.93 km/h) | 109.2 mph (175.75 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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