Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-20 | 245/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26 (660.5) | 26.75 (679.5) | 0.75 (19) 2.9% |
| Width inches (mm) | 12.01 (305) | 9.65 (245) | -2.36 (-60) -19.7% |
| Circum. inches (mm) | 81.69 (2075.02) | 84.04 (2134.71) | 2.35 (59.69) 2.9% |
| Sidewall Height inches (mm) | 3 (76.25) | 3.38 (85.75) | 0.37 (9.5) 12.5% |
| Revolutions per mile (km) | 775.58 (481.92) | 753.89 (468.45) | -21.69 (-13.48) -2.8% |
245/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.58 mph (33.11 km/h) |
| 25 mph (40.23 km/h) | 25.72 mph (41.39 km/h) |
| 30 mph (48.28 km/h) | 30.86 mph (49.67 km/h) |
| 35 mph (56.33 km/h) | 36.01 mph (57.95 km/h) |
| 40 mph (64.37 km/h) | 41.15 mph (66.23 km/h) |
| 45 mph (72.42 km/h) | 46.29 mph (74.5 km/h) |
| 50 mph (80.47 km/h) | 51.44 mph (82.78 km/h) |
| 55 mph (88.51 km/h) | 56.58 mph (91.06 km/h) |
| 60 mph (96.56 km/h) | 61.73 mph (99.34 km/h) |
| 65 mph (104.61 km/h) | 66.87 mph (107.62 km/h) |
| 70 mph (112.65 km/h) | 72.01 mph (115.89 km/h) |
| 75 mph (120.7 km/h) | 77.16 mph (124.17 km/h) |
| 80 mph (128.75 km/h) | 82.3 mph (132.45 km/h) |
| 85 mph (136.79 km/h) | 87.45 mph (140.73 km/h) |
| 90 mph (144.84 km/h) | 92.59 mph (149.01 km/h) |
| 95 mph (152.89 km/h) | 97.73 mph (157.29 km/h) |
| 100 mph (160.93 km/h) | 102.88 mph (165.56 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
