Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/55-20 | 245/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.18 (766.5) | 31.57 (802) | 1.4 (35.5) 4.6% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 94.8 (2408.03) | 99.2 (2519.56) | 4.39 (111.53) 4.6% |
| Sidewall Height inches (mm) | 5.09 (129.25) | 5.79 (147) | 0.7 (17.75) 13.7% |
| Revolutions per mile (km) | 668.32 (415.28) | 638.74 (396.89) | -29.58 (-18.38) -4.4% |
245/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.93 mph (33.68 km/h) |
| 25 mph (40.23 km/h) | 26.16 mph (42.1 km/h) |
| 30 mph (48.28 km/h) | 31.39 mph (50.52 km/h) |
| 35 mph (56.33 km/h) | 36.62 mph (58.94 km/h) |
| 40 mph (64.37 km/h) | 41.85 mph (67.36 km/h) |
| 45 mph (72.42 km/h) | 47.08 mph (75.77 km/h) |
| 50 mph (80.47 km/h) | 52.32 mph (84.19 km/h) |
| 55 mph (88.51 km/h) | 57.55 mph (92.61 km/h) |
| 60 mph (96.56 km/h) | 62.78 mph (101.03 km/h) |
| 65 mph (104.61 km/h) | 68.01 mph (109.45 km/h) |
| 70 mph (112.65 km/h) | 73.24 mph (117.87 km/h) |
| 75 mph (120.7 km/h) | 78.47 mph (126.29 km/h) |
| 80 mph (128.75 km/h) | 83.71 mph (134.71 km/h) |
| 85 mph (136.79 km/h) | 88.94 mph (143.13 km/h) |
| 90 mph (144.84 km/h) | 94.17 mph (151.55 km/h) |
| 95 mph (152.89 km/h) | 99.4 mph (159.97 km/h) |
| 100 mph (160.93 km/h) | 104.63 mph (168.39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1625 | 1888 | 2034 | 2123 | 2220 | 2289 | 2366 | 2456 | 2580 | 2705 | 2843 | 2954 | 3154 | 3375 | 3548 | 3659 | 3721 | 3950 | 4268 | 4959 |
Better Fuel Economy Factory Ratios Increased Power
