Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-20 | 305/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.29 (744) | 29.61 (752) | 0.31 (8) 1.1% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 92.02 (2337.34) | 93.01 (2362.48) | 0.99 (25.13) 1.1% |
| Sidewall Height inches (mm) | 4.65 (118) | 4.8 (122) | 0.16 (4) 3.4% |
| Revolutions per mile (km) | 688.54 (427.84) | 681.21 (423.28) | -7.32 (-4.55) -1.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.22 mph (32.53 km/h) |
| 25 mph (40.23 km/h) | 25.27 mph (40.67 km/h) |
| 30 mph (48.28 km/h) | 30.32 mph (48.8 km/h) |
| 35 mph (56.33 km/h) | 35.38 mph (56.93 km/h) |
| 40 mph (64.37 km/h) | 40.43 mph (65.07 km/h) |
| 45 mph (72.42 km/h) | 45.48 mph (73.2 km/h) |
| 50 mph (80.47 km/h) | 50.54 mph (81.33 km/h) |
| 55 mph (88.51 km/h) | 55.59 mph (89.47 km/h) |
| 60 mph (96.56 km/h) | 60.65 mph (97.6 km/h) |
| 65 mph (104.61 km/h) | 65.7 mph (105.73 km/h) |
| 70 mph (112.65 km/h) | 70.75 mph (113.87 km/h) |
| 75 mph (120.7 km/h) | 75.81 mph (122 km/h) |
| 80 mph (128.75 km/h) | 80.86 mph (130.13 km/h) |
| 85 mph (136.79 km/h) | 85.91 mph (138.27 km/h) |
| 90 mph (144.84 km/h) | 90.97 mph (146.4 km/h) |
| 95 mph (152.89 km/h) | 96.02 mph (154.53 km/h) |
| 100 mph (160.93 km/h) | 101.08 mph (162.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1734 | 2014 | 2169 | 2265 | 2368 | 2442 | 2523 | 2619 | 2752 | 2884 | 3032 | 3150 | 3364 | 3600 | 3784 | 3902 | 3969 | 4212 | 4551 | 5289 |
Better Fuel Economy Factory Ratios Increased Power
