Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-20 | 245/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.09 (688) | 26.75 (679.5) | -0.33 (-8.5) -1.2% |
| Width inches (mm) | 8.86 (225) | 9.65 (245) | 0.79 (20) 8.9% |
| Circum. inches (mm) | 85.1 (2161.42) | 84.04 (2134.71) | -1.05 (-26.7) -1.2% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.38 (85.75) | -0.17 (-4.25) -4.7% |
| Revolutions per mile (km) | 744.58 (462.66) | 753.89 (468.45) | 9.31 (5.79) 1.3% |
245/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.75 mph (31.79 km/h) |
| 25 mph (40.23 km/h) | 24.69 mph (39.74 km/h) |
| 30 mph (48.28 km/h) | 29.63 mph (47.68 km/h) |
| 35 mph (56.33 km/h) | 34.57 mph (55.63 km/h) |
| 40 mph (64.37 km/h) | 39.51 mph (63.58 km/h) |
| 45 mph (72.42 km/h) | 44.44 mph (71.53 km/h) |
| 50 mph (80.47 km/h) | 49.38 mph (79.47 km/h) |
| 55 mph (88.51 km/h) | 54.32 mph (87.42 km/h) |
| 60 mph (96.56 km/h) | 59.26 mph (95.37 km/h) |
| 65 mph (104.61 km/h) | 64.2 mph (103.32 km/h) |
| 70 mph (112.65 km/h) | 69.14 mph (111.26 km/h) |
| 75 mph (120.7 km/h) | 74.07 mph (119.21 km/h) |
| 80 mph (128.75 km/h) | 79.01 mph (127.16 km/h) |
| 85 mph (136.79 km/h) | 83.95 mph (135.1 km/h) |
| 90 mph (144.84 km/h) | 88.89 mph (143.05 km/h) |
| 95 mph (152.89 km/h) | 93.83 mph (151 km/h) |
| 100 mph (160.93 km/h) | 98.76 mph (158.95 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
