Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/30-18 | 275/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.73 (628.2) | 25.58 (649.7) | 0.85 (21.5) 3.4% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 77.7 (1973.55) | 80.36 (2041.09) | 2.66 (67.54) 3.4% |
| Sidewall Height inches (mm) | 3.37 (85.5) | 3.79 (96.25) | 0.42 (10.75) 12.6% |
| Revolutions per mile (km) | 815.46 (506.7) | 788.47 (489.93) | -26.99 (-16.77) -3.3% |
275/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.29 km/h) |
| 25 mph (40.23 km/h) | 25.86 mph (41.61 km/h) |
| 30 mph (48.28 km/h) | 31.03 mph (49.93 km/h) |
| 35 mph (56.33 km/h) | 36.2 mph (58.25 km/h) |
| 40 mph (64.37 km/h) | 41.37 mph (66.58 km/h) |
| 45 mph (72.42 km/h) | 46.54 mph (74.9 km/h) |
| 50 mph (80.47 km/h) | 51.71 mph (83.22 km/h) |
| 55 mph (88.51 km/h) | 56.88 mph (91.54 km/h) |
| 60 mph (96.56 km/h) | 62.05 mph (99.87 km/h) |
| 65 mph (104.61 km/h) | 67.22 mph (108.19 km/h) |
| 70 mph (112.65 km/h) | 72.4 mph (116.51 km/h) |
| 75 mph (120.7 km/h) | 77.57 mph (124.83 km/h) |
| 80 mph (128.75 km/h) | 82.74 mph (133.15 km/h) |
| 85 mph (136.79 km/h) | 87.91 mph (141.48 km/h) |
| 90 mph (144.84 km/h) | 93.08 mph (149.8 km/h) |
| 95 mph (152.89 km/h) | 98.25 mph (158.12 km/h) |
| 100 mph (160.93 km/h) | 103.42 mph (166.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2007 | 2331 | 2510 | 2621 | 2741 | 2826 | 2920 | 3031 | 3185 | 3338 | 3509 | 3646 | 3893 | 4167 | 4380 | 4517 | 4594 | 4875 | 5268 | 6122 |
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