Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/35-19 | 285/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.58 (675.1) | 26.73 (679) | 0.15 (3.9) 0.6% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 83.5 (2120.89) | 83.98 (2133.14) | 0.48 (12.25) 0.6% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 3.37 (85.5) | -0.42 (-10.75) -11.2% |
| Revolutions per mile (km) | 758.81 (471.5) | 754.45 (468.79) | -4.36 (-2.71) -0.6% |
285/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.12 mph (32.37 km/h) |
| 25 mph (40.23 km/h) | 25.14 mph (40.47 km/h) |
| 30 mph (48.28 km/h) | 30.17 mph (48.56 km/h) |
| 35 mph (56.33 km/h) | 35.2 mph (56.65 km/h) |
| 40 mph (64.37 km/h) | 40.23 mph (64.75 km/h) |
| 45 mph (72.42 km/h) | 45.26 mph (72.84 km/h) |
| 50 mph (80.47 km/h) | 50.29 mph (80.93 km/h) |
| 55 mph (88.51 km/h) | 55.32 mph (89.03 km/h) |
| 60 mph (96.56 km/h) | 60.35 mph (97.12 km/h) |
| 65 mph (104.61 km/h) | 65.38 mph (105.21 km/h) |
| 70 mph (112.65 km/h) | 70.4 mph (113.31 km/h) |
| 75 mph (120.7 km/h) | 75.43 mph (121.4 km/h) |
| 80 mph (128.75 km/h) | 80.46 mph (129.49 km/h) |
| 85 mph (136.79 km/h) | 85.49 mph (137.58 km/h) |
| 90 mph (144.84 km/h) | 90.52 mph (145.68 km/h) |
| 95 mph (152.89 km/h) | 95.55 mph (153.77 km/h) |
| 100 mph (160.93 km/h) | 100.58 mph (161.86 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1920 | 2230 | 2402 | 2508 | 2623 | 2704 | 2794 | 2900 | 3047 | 3194 | 3358 | 3489 | 3725 | 3987 | 4191 | 4322 | 4395 | 4665 | 5041 | 5858 |
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