Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/45-20 | 245/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.74 (755.5) | 26.75 (679.5) | -2.99 (-76) -10.1% |
| Width inches (mm) | 10.83 (275) | 9.65 (245) | -1.18 (-30) -10.9% |
| Circum. inches (mm) | 93.44 (2373.47) | 84.04 (2134.71) | -9.4 (-238.76) -10.1% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 3.38 (85.75) | -1.5 (-38) -30.7% |
| Revolutions per mile (km) | 678.05 (421.32) | 753.89 (468.45) | 75.84 (47.12) 11.2% |
245/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.99 mph (28.95 km/h) |
| 25 mph (40.23 km/h) | 22.49 mph (36.19 km/h) |
| 30 mph (48.28 km/h) | 26.98 mph (43.42 km/h) |
| 35 mph (56.33 km/h) | 31.48 mph (50.66 km/h) |
| 40 mph (64.37 km/h) | 35.98 mph (57.9 km/h) |
| 45 mph (72.42 km/h) | 40.47 mph (65.14 km/h) |
| 50 mph (80.47 km/h) | 44.97 mph (72.37 km/h) |
| 55 mph (88.51 km/h) | 49.47 mph (79.61 km/h) |
| 60 mph (96.56 km/h) | 53.96 mph (86.85 km/h) |
| 65 mph (104.61 km/h) | 58.46 mph (94.08 km/h) |
| 70 mph (112.65 km/h) | 62.96 mph (101.32 km/h) |
| 75 mph (120.7 km/h) | 67.46 mph (108.56 km/h) |
| 80 mph (128.75 km/h) | 71.95 mph (115.8 km/h) |
| 85 mph (136.79 km/h) | 76.45 mph (123.03 km/h) |
| 90 mph (144.84 km/h) | 80.95 mph (130.27 km/h) |
| 95 mph (152.89 km/h) | 85.44 mph (137.51 km/h) |
| 100 mph (160.93 km/h) | 89.94 mph (144.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1919 | 2229 | 2400 | 2506 | 2621 | 2702 | 2792 | 2898 | 3045 | 3192 | 3355 | 3486 | 3723 | 3984 | 4188 | 4319 | 4392 | 4662 | 5037 | 5854 |
Better Fuel Economy Factory Ratios Increased Power
