Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 270/70-16 | 290/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.88 (784.4) | 35.98 (914) | 5.1 (129.6) 16.5% |
| Width inches (mm) | 10.63 (270) | 11.42 (290) | 0.79 (20) 7.4% |
| Circum. inches (mm) | 97.02 (2464.27) | 113.05 (2871.42) | 16.03 (407.15) 16.5% |
| Sidewall Height inches (mm) | 7.44 (189) | 7.99 (203) | 0.55 (14) 7.4% |
| Revolutions per mile (km) | 653.07 (405.8) | 560.47 (348.26) | -92.6 (-57.54) -14.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.3 mph (37.5 km/h) |
| 25 mph (40.23 km/h) | 29.13 mph (46.88 km/h) |
| 30 mph (48.28 km/h) | 34.96 mph (56.26 km/h) |
| 35 mph (56.33 km/h) | 40.78 mph (65.63 km/h) |
| 40 mph (64.37 km/h) | 46.61 mph (75.01 km/h) |
| 45 mph (72.42 km/h) | 52.43 mph (84.39 km/h) |
| 50 mph (80.47 km/h) | 58.26 mph (93.76 km/h) |
| 55 mph (88.51 km/h) | 64.09 mph (103.14 km/h) |
| 60 mph (96.56 km/h) | 69.91 mph (112.51 km/h) |
| 65 mph (104.61 km/h) | 75.74 mph (121.89 km/h) |
| 70 mph (112.65 km/h) | 81.57 mph (131.27 km/h) |
| 75 mph (120.7 km/h) | 87.39 mph (140.64 km/h) |
| 80 mph (128.75 km/h) | 93.22 mph (150.02 km/h) |
| 85 mph (136.79 km/h) | 99.04 mph (159.4 km/h) |
| 90 mph (144.84 km/h) | 104.87 mph (168.77 km/h) |
| 95 mph (152.89 km/h) | 110.7 mph (178.15 km/h) |
| 100 mph (160.93 km/h) | 116.52 mph (187.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1426 | 1657 | 1784 | 1863 | 1948 | 2009 | 2076 | 2155 | 2264 | 2373 | 2494 | 2592 | 2768 | 2962 | 3114 | 3211 | 3265 | 3466 | 3745 | 4352 |
Better Fuel Economy Factory Ratios Increased Power
