Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/45-18 | 315/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.45 (722.7) | 27.92 (709.2) | -0.53 (-13.5) -1.9% |
| Width inches (mm) | 11.61 (295) | 12.4 (315) | 0.79 (20) 6.8% |
| Circum. inches (mm) | 89.39 (2270.43) | 87.72 (2228.02) | -1.67 (-42.41) -1.9% |
| Sidewall Height inches (mm) | 5.23 (132.75) | 4.96 (126) | -0.27 (-6.75) -5.1% |
| Revolutions per mile (km) | 708.83 (440.44) | 722.32 (448.83) | 13.49 (8.38) 1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.59 km/h) |
| 25 mph (40.23 km/h) | 24.53 mph (39.48 km/h) |
| 30 mph (48.28 km/h) | 29.44 mph (47.38 km/h) |
| 35 mph (56.33 km/h) | 34.35 mph (55.27 km/h) |
| 40 mph (64.37 km/h) | 39.25 mph (63.17 km/h) |
| 45 mph (72.42 km/h) | 44.16 mph (71.07 km/h) |
| 50 mph (80.47 km/h) | 49.07 mph (78.96 km/h) |
| 55 mph (88.51 km/h) | 53.97 mph (86.86 km/h) |
| 60 mph (96.56 km/h) | 58.88 mph (94.76 km/h) |
| 65 mph (104.61 km/h) | 63.79 mph (102.65 km/h) |
| 70 mph (112.65 km/h) | 68.69 mph (110.55 km/h) |
| 75 mph (120.7 km/h) | 73.6 mph (118.45 km/h) |
| 80 mph (128.75 km/h) | 78.51 mph (126.34 km/h) |
| 85 mph (136.79 km/h) | 83.41 mph (134.24 km/h) |
| 90 mph (144.84 km/h) | 88.32 mph (142.14 km/h) |
| 95 mph (152.89 km/h) | 93.23 mph (150.03 km/h) |
| 100 mph (160.93 km/h) | 98.13 mph (157.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1838 | 2135 | 2300 | 2401 | 2511 | 2589 | 2675 | 2777 | 2918 | 3058 | 3215 | 3340 | 3567 | 3817 | 4013 | 4138 | 4208 | 4466 | 4826 | 5608 |
Better Fuel Economy Factory Ratios Increased Power
