Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-20 | 305/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.29 (744) | 28.41 (721.5) | -0.89 (-22.5) -3% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 92.02 (2337.34) | 89.24 (2266.66) | -2.78 (-70.69) -3% |
| Sidewall Height inches (mm) | 4.65 (118) | 4.2 (106.75) | -0.44 (-11.25) -9.5% |
| Revolutions per mile (km) | 688.54 (427.84) | 710.01 (441.18) | 21.47 (13.34) 3.1% |
305/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.4 mph (31.21 km/h) |
| 25 mph (40.23 km/h) | 24.24 mph (39.02 km/h) |
| 30 mph (48.28 km/h) | 29.09 mph (46.82 km/h) |
| 35 mph (56.33 km/h) | 33.94 mph (54.62 km/h) |
| 40 mph (64.37 km/h) | 38.79 mph (62.43 km/h) |
| 45 mph (72.42 km/h) | 43.64 mph (70.23 km/h) |
| 50 mph (80.47 km/h) | 48.49 mph (78.03 km/h) |
| 55 mph (88.51 km/h) | 53.34 mph (85.84 km/h) |
| 60 mph (96.56 km/h) | 58.19 mph (93.64 km/h) |
| 65 mph (104.61 km/h) | 63.03 mph (101.44 km/h) |
| 70 mph (112.65 km/h) | 67.88 mph (109.25 km/h) |
| 75 mph (120.7 km/h) | 72.73 mph (117.05 km/h) |
| 80 mph (128.75 km/h) | 77.58 mph (124.85 km/h) |
| 85 mph (136.79 km/h) | 82.43 mph (132.66 km/h) |
| 90 mph (144.84 km/h) | 87.28 mph (140.46 km/h) |
| 95 mph (152.89 km/h) | 92.13 mph (148.26 km/h) |
| 100 mph (160.93 km/h) | 96.98 mph (156.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1807 | 2099 | 2260 | 2360 | 2468 | 2545 | 2630 | 2729 | 2868 | 3006 | 3160 | 3283 | 3506 | 3752 | 3944 | 4067 | 4136 | 4390 | 4744 | 5513 |
Better Fuel Economy Factory Ratios Increased Power
