Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-20 | 285/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.81 (655.5) | 26.73 (679) | 0.93 (23.5) 3.6% |
| Width inches (mm) | 11.61 (295) | 11.22 (285) | -0.39 (-10) -3.4% |
| Circum. inches (mm) | 81.08 (2059.31) | 83.98 (2133.14) | 2.91 (73.83) 3.6% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 3.37 (85.5) | 0.46 (11.75) 15.9% |
| Revolutions per mile (km) | 781.5 (485.6) | 754.45 (468.79) | -27.05 (-16.81) -3.5% |
285/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.72 mph (33.34 km/h) |
| 25 mph (40.23 km/h) | 25.9 mph (41.68 km/h) |
| 30 mph (48.28 km/h) | 31.08 mph (50.01 km/h) |
| 35 mph (56.33 km/h) | 36.25 mph (58.35 km/h) |
| 40 mph (64.37 km/h) | 41.43 mph (66.68 km/h) |
| 45 mph (72.42 km/h) | 46.61 mph (75.02 km/h) |
| 50 mph (80.47 km/h) | 51.79 mph (83.35 km/h) |
| 55 mph (88.51 km/h) | 56.97 mph (91.69 km/h) |
| 60 mph (96.56 km/h) | 62.15 mph (100.02 km/h) |
| 65 mph (104.61 km/h) | 67.33 mph (108.36 km/h) |
| 70 mph (112.65 km/h) | 72.51 mph (116.69 km/h) |
| 75 mph (120.7 km/h) | 77.69 mph (125.03 km/h) |
| 80 mph (128.75 km/h) | 82.87 mph (133.36 km/h) |
| 85 mph (136.79 km/h) | 88.05 mph (141.7 km/h) |
| 90 mph (144.84 km/h) | 93.23 mph (150.03 km/h) |
| 95 mph (152.89 km/h) | 98.41 mph (158.37 km/h) |
| 100 mph (160.93 km/h) | 103.59 mph (166.7 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 |
Better Fuel Economy Factory Ratios Increased Power
