Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-18 | 295/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.13 (689.2) | 34.26 (870.2) | 7.13 (181) 26.3% |
| Width inches (mm) | 5.71 (145) | 11.61 (295) | 5.91 (150) 103.4% |
| Circum. inches (mm) | 85.24 (2165.19) | 107.63 (2733.81) | 22.39 (568.63) 26.3% |
| Sidewall Height inches (mm) | 4.57 (116) | 8.13 (206.5) | 3.56 (90.5) 78% |
| Revolutions per mile (km) | 743.28 (461.85) | 588.68 (365.79) | -154.6 (-96.06) -20.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.25 mph (40.64 km/h) |
| 25 mph (40.23 km/h) | 31.57 mph (50.8 km/h) |
| 30 mph (48.28 km/h) | 37.88 mph (60.96 km/h) |
| 35 mph (56.33 km/h) | 44.19 mph (71.12 km/h) |
| 40 mph (64.37 km/h) | 50.5 mph (81.28 km/h) |
| 45 mph (72.42 km/h) | 56.82 mph (91.44 km/h) |
| 50 mph (80.47 km/h) | 63.13 mph (101.6 km/h) |
| 55 mph (88.51 km/h) | 69.44 mph (111.76 km/h) |
| 60 mph (96.56 km/h) | 75.76 mph (121.92 km/h) |
| 65 mph (104.61 km/h) | 82.07 mph (132.08 km/h) |
| 70 mph (112.65 km/h) | 88.38 mph (142.24 km/h) |
| 75 mph (120.7 km/h) | 94.7 mph (152.4 km/h) |
| 80 mph (128.75 km/h) | 101.01 mph (162.56 km/h) |
| 85 mph (136.79 km/h) | 107.32 mph (172.72 km/h) |
| 90 mph (144.84 km/h) | 113.64 mph (182.88 km/h) |
| 95 mph (152.89 km/h) | 119.95 mph (193.04 km/h) |
| 100 mph (160.93 km/h) | 126.26 mph (203.2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1498 | 1740 | 1874 | 1957 | 2046 | 2110 | 2180 | 2263 | 2378 | 2493 | 2620 | 2722 | 2907 | 3111 | 3270 | 3372 | 3430 | 3640 | 3933 | 4571 |
Better Fuel Economy Factory Ratios Increased Power
