Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/45-18 | 295/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.81 (731.7) | 27.29 (693.2) | -1.52 (-38.5) -5.3% |
| Width inches (mm) | 12.01 (305) | 11.61 (295) | -0.39 (-10) -3.3% |
| Circum. inches (mm) | 90.5 (2298.7) | 85.74 (2177.75) | -4.76 (-120.95) -5.3% |
| Sidewall Height inches (mm) | 5.4 (137.25) | 4.65 (118) | -0.76 (-19.25) -14% |
| Revolutions per mile (km) | 700.11 (435.03) | 738.99 (459.19) | 38.88 (24.16) 5.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.95 mph (30.49 km/h) |
| 25 mph (40.23 km/h) | 23.68 mph (38.12 km/h) |
| 30 mph (48.28 km/h) | 28.42 mph (45.74 km/h) |
| 35 mph (56.33 km/h) | 33.16 mph (53.36 km/h) |
| 40 mph (64.37 km/h) | 37.9 mph (60.99 km/h) |
| 45 mph (72.42 km/h) | 42.63 mph (68.61 km/h) |
| 50 mph (80.47 km/h) | 47.37 mph (76.23 km/h) |
| 55 mph (88.51 km/h) | 52.11 mph (83.86 km/h) |
| 60 mph (96.56 km/h) | 56.84 mph (91.48 km/h) |
| 65 mph (104.61 km/h) | 61.58 mph (99.1 km/h) |
| 70 mph (112.65 km/h) | 66.32 mph (106.73 km/h) |
| 75 mph (120.7 km/h) | 71.05 mph (114.35 km/h) |
| 80 mph (128.75 km/h) | 75.79 mph (121.97 km/h) |
| 85 mph (136.79 km/h) | 80.53 mph (129.6 km/h) |
| 90 mph (144.84 km/h) | 85.26 mph (137.22 km/h) |
| 95 mph (152.89 km/h) | 90 mph (144.84 km/h) |
| 100 mph (160.93 km/h) | 94.74 mph (152.47 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1881 | 2185 | 2353 | 2457 | 2569 | 2649 | 2737 | 2841 | 2985 | 3129 | 3289 | 3417 | 3649 | 3905 | 4105 | 4233 | 4305 | 4569 | 4938 | 5738 |
Better Fuel Economy Factory Ratios Increased Power
