Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/45-16 | 30/14.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.16 (689.9) | 29.88 (758.96) | 2.72 (69.06) 10% |
| Width inches (mm) | 12.4 (315) | 14.49 (368) | 2.09 (53) 16.8% |
| Circum. inches (mm) | 85.33 (2167.38) | 93.87 (2384.34) | 8.54 (216.96) 10% |
| Sidewall Height inches (mm) | 5.58 (141.75) | 5.94 (150.88) | 0.36 (9.13) 6.4% |
| Revolutions per mile (km) | 742.53 (461.38) | 674.96 (419.4) | -67.56 (-41.98) -9.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22 mph (35.41 km/h) |
| 25 mph (40.23 km/h) | 27.5 mph (44.26 km/h) |
| 30 mph (48.28 km/h) | 33 mph (53.11 km/h) |
| 35 mph (56.33 km/h) | 38.5 mph (61.97 km/h) |
| 40 mph (64.37 km/h) | 44 mph (70.82 km/h) |
| 45 mph (72.42 km/h) | 49.5 mph (79.67 km/h) |
| 50 mph (80.47 km/h) | 55.01 mph (88.52 km/h) |
| 55 mph (88.51 km/h) | 60.51 mph (97.37 km/h) |
| 60 mph (96.56 km/h) | 66.01 mph (106.23 km/h) |
| 65 mph (104.61 km/h) | 71.51 mph (115.08 km/h) |
| 70 mph (112.65 km/h) | 77.01 mph (123.93 km/h) |
| 75 mph (120.7 km/h) | 82.51 mph (132.78 km/h) |
| 80 mph (128.75 km/h) | 88.01 mph (141.64 km/h) |
| 85 mph (136.79 km/h) | 93.51 mph (150.49 km/h) |
| 90 mph (144.84 km/h) | 99.01 mph (159.34 km/h) |
| 95 mph (152.89 km/h) | 104.51 mph (168.19 km/h) |
| 100 mph (160.93 km/h) | 110.01 mph (177.04 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1718 | 1995 | 2149 | 2244 | 2346 | 2419 | 2500 | 2595 | 2726 | 2858 | 3004 | 3121 | 3333 | 3567 | 3750 | 3867 | 3932 | 4174 | 4510 | 5241 |
Better Fuel Economy Factory Ratios Increased Power
