Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/45-16 | 315/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.16 (689.9) | 30.4 (772.2) | 3.24 (82.3) 11.9% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 85.33 (2167.38) | 95.51 (2425.94) | 10.18 (258.55) 11.9% |
| Sidewall Height inches (mm) | 5.58 (141.75) | 6.2 (157.5) | 0.62 (15.75) 11.1% |
| Revolutions per mile (km) | 742.53 (461.38) | 663.39 (412.21) | -79.14 (-49.17) -10.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.39 mph (36.03 km/h) |
| 25 mph (40.23 km/h) | 27.98 mph (45.03 km/h) |
| 30 mph (48.28 km/h) | 33.58 mph (54.04 km/h) |
| 35 mph (56.33 km/h) | 39.18 mph (63.05 km/h) |
| 40 mph (64.37 km/h) | 44.77 mph (72.05 km/h) |
| 45 mph (72.42 km/h) | 50.37 mph (81.06 km/h) |
| 50 mph (80.47 km/h) | 55.96 mph (90.07 km/h) |
| 55 mph (88.51 km/h) | 61.56 mph (99.07 km/h) |
| 60 mph (96.56 km/h) | 67.16 mph (108.08 km/h) |
| 65 mph (104.61 km/h) | 72.75 mph (117.09 km/h) |
| 70 mph (112.65 km/h) | 78.35 mph (126.09 km/h) |
| 75 mph (120.7 km/h) | 83.95 mph (135.1 km/h) |
| 80 mph (128.75 km/h) | 89.54 mph (144.11 km/h) |
| 85 mph (136.79 km/h) | 95.14 mph (153.11 km/h) |
| 90 mph (144.84 km/h) | 100.74 mph (162.12 km/h) |
| 95 mph (152.89 km/h) | 106.33 mph (171.13 km/h) |
| 100 mph (160.93 km/h) | 111.93 mph (180.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1688 | 1961 | 2112 | 2205 | 2306 | 2378 | 2457 | 2550 | 2680 | 2809 | 2953 | 3067 | 3276 | 3506 | 3685 | 3800 | 3865 | 4102 | 4432 | 5151 |
Better Fuel Economy Factory Ratios Increased Power
