Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/35-18 | 245/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.03 (635.7) | 26.68 (677.7) | 1.65 (42) 6.6% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 78.63 (1997.11) | 83.82 (2129.06) | 5.19 (131.95) 6.6% |
| Sidewall Height inches (mm) | 3.51 (89.25) | 4.34 (110.25) | 0.83 (21) 23.5% |
| Revolutions per mile (km) | 805.84 (500.72) | 755.9 (469.69) | -49.94 (-31.03) -6.2% |
245/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.32 mph (34.31 km/h) |
| 25 mph (40.23 km/h) | 26.65 mph (42.89 km/h) |
| 30 mph (48.28 km/h) | 31.98 mph (51.47 km/h) |
| 35 mph (56.33 km/h) | 37.31 mph (60.05 km/h) |
| 40 mph (64.37 km/h) | 42.64 mph (68.63 km/h) |
| 45 mph (72.42 km/h) | 47.97 mph (77.21 km/h) |
| 50 mph (80.47 km/h) | 53.3 mph (85.78 km/h) |
| 55 mph (88.51 km/h) | 58.63 mph (94.36 km/h) |
| 60 mph (96.56 km/h) | 63.96 mph (102.94 km/h) |
| 65 mph (104.61 km/h) | 69.29 mph (111.52 km/h) |
| 70 mph (112.65 km/h) | 74.62 mph (120.1 km/h) |
| 75 mph (120.7 km/h) | 79.96 mph (128.68 km/h) |
| 80 mph (128.75 km/h) | 85.29 mph (137.25 km/h) |
| 85 mph (136.79 km/h) | 90.62 mph (145.83 km/h) |
| 90 mph (144.84 km/h) | 95.95 mph (154.41 km/h) |
| 95 mph (152.89 km/h) | 101.28 mph (162.99 km/h) |
| 100 mph (160.93 km/h) | 106.61 mph (171.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1924 | 2235 | 2407 | 2513 | 2628 | 2709 | 2799 | 2906 | 3053 | 3201 | 3364 | 3495 | 3733 | 3995 | 4199 | 4330 | 4404 | 4674 | 5050 | 5869 |
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