Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/30-18 | 255/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.73 (628.2) | 25.03 (635.7) | 0.3 (7.5) 1.2% |
| Width inches (mm) | 11.22 (285) | 10.04 (255) | -1.18 (-30) -10.5% |
| Circum. inches (mm) | 77.7 (1973.55) | 78.63 (1997.11) | 0.93 (23.56) 1.2% |
| Sidewall Height inches (mm) | 3.37 (85.5) | 3.51 (89.25) | 0.15 (3.75) 4.4% |
| Revolutions per mile (km) | 815.46 (506.7) | 805.84 (500.72) | -9.62 (-5.98) -1.2% |
255/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.57 km/h) |
| 25 mph (40.23 km/h) | 25.3 mph (40.71 km/h) |
| 30 mph (48.28 km/h) | 30.36 mph (48.86 km/h) |
| 35 mph (56.33 km/h) | 35.42 mph (57 km/h) |
| 40 mph (64.37 km/h) | 40.48 mph (65.14 km/h) |
| 45 mph (72.42 km/h) | 45.54 mph (73.29 km/h) |
| 50 mph (80.47 km/h) | 50.6 mph (81.43 km/h) |
| 55 mph (88.51 km/h) | 55.66 mph (89.57 km/h) |
| 60 mph (96.56 km/h) | 60.72 mph (97.71 km/h) |
| 65 mph (104.61 km/h) | 65.78 mph (105.86 km/h) |
| 70 mph (112.65 km/h) | 70.84 mph (114 km/h) |
| 75 mph (120.7 km/h) | 75.9 mph (122.14 km/h) |
| 80 mph (128.75 km/h) | 80.96 mph (130.28 km/h) |
| 85 mph (136.79 km/h) | 86.01 mph (138.43 km/h) |
| 90 mph (144.84 km/h) | 91.07 mph (146.57 km/h) |
| 95 mph (152.89 km/h) | 96.13 mph (154.71 km/h) |
| 100 mph (160.93 km/h) | 101.19 mph (162.86 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2051 | 2382 | 2566 | 2679 | 2801 | 2888 | 2984 | 3098 | 3255 | 3412 | 3587 | 3726 | 3979 | 4258 | 4477 | 4616 | 4695 | 4983 | 5384 | 6257 |
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