Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/45-18 | 285/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.74 (704.7) | 25.85 (656.7) | -1.89 (-48) -6.8% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 87.16 (2213.88) | 81.22 (2063.08) | -5.94 (-150.8) -6.8% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 3.93 (99.75) | -0.94 (-24) -19.4% |
| Revolutions per mile (km) | 726.93 (451.69) | 780.07 (484.71) | 53.13 (33.02) 7.3% |
285/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.64 mph (29.99 km/h) |
| 25 mph (40.23 km/h) | 23.3 mph (37.49 km/h) |
| 30 mph (48.28 km/h) | 27.96 mph (44.99 km/h) |
| 35 mph (56.33 km/h) | 32.62 mph (52.49 km/h) |
| 40 mph (64.37 km/h) | 37.28 mph (59.99 km/h) |
| 45 mph (72.42 km/h) | 41.93 mph (67.49 km/h) |
| 50 mph (80.47 km/h) | 46.59 mph (74.99 km/h) |
| 55 mph (88.51 km/h) | 51.25 mph (82.49 km/h) |
| 60 mph (96.56 km/h) | 55.91 mph (89.98 km/h) |
| 65 mph (104.61 km/h) | 60.57 mph (97.48 km/h) |
| 70 mph (112.65 km/h) | 65.23 mph (104.98 km/h) |
| 75 mph (120.7 km/h) | 69.89 mph (112.48 km/h) |
| 80 mph (128.75 km/h) | 74.55 mph (119.98 km/h) |
| 85 mph (136.79 km/h) | 79.21 mph (127.48 km/h) |
| 90 mph (144.84 km/h) | 83.87 mph (134.98 km/h) |
| 95 mph (152.89 km/h) | 88.53 mph (142.47 km/h) |
| 100 mph (160.93 km/h) | 93.19 mph (149.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | 2306 | 2484 | 2593 | 2712 | 2796 | 2889 | 2999 | 3151 | 3303 | 3472 | 3607 | 3852 | 4122 | 4333 | 4469 | 4545 | 4823 | 5212 | 6057 |
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