Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 37/13.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 36.99 (939.44) | -0.46 (-11.56) -1.2% |
| Width inches (mm) | 12.4 (315) | 13.5 (343) | 1.1 (28) 8.9% |
| Circum. inches (mm) | 117.62 (2987.65) | 116.19 (2951.34) | -1.43 (-36.32) -1.2% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 9.99 (253.82) | 6.27 (159.32) 168.6% |
| Revolutions per mile (km) | 538.66 (334.71) | 545.29 (338.83) | 6.63 (4.12) 1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.76 mph (31.8 km/h) |
| 25 mph (40.23 km/h) | 24.7 mph (39.74 km/h) |
| 30 mph (48.28 km/h) | 29.64 mph (47.69 km/h) |
| 35 mph (56.33 km/h) | 34.57 mph (55.64 km/h) |
| 40 mph (64.37 km/h) | 39.51 mph (63.59 km/h) |
| 45 mph (72.42 km/h) | 44.45 mph (71.54 km/h) |
| 50 mph (80.47 km/h) | 49.39 mph (79.49 km/h) |
| 55 mph (88.51 km/h) | 54.33 mph (87.44 km/h) |
| 60 mph (96.56 km/h) | 59.27 mph (95.39 km/h) |
| 65 mph (104.61 km/h) | 64.21 mph (103.34 km/h) |
| 70 mph (112.65 km/h) | 69.15 mph (111.28 km/h) |
| 75 mph (120.7 km/h) | 74.09 mph (119.23 km/h) |
| 80 mph (128.75 km/h) | 79.03 mph (127.18 km/h) |
| 85 mph (136.79 km/h) | 83.97 mph (135.13 km/h) |
| 90 mph (144.84 km/h) | 88.91 mph (143.08 km/h) |
| 95 mph (152.89 km/h) | 93.85 mph (151.03 km/h) |
| 100 mph (160.93 km/h) | 98.78 mph (158.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1388 | 1612 | 1736 | 1813 | 1895 | 1955 | 2019 | 2096 | 2203 | 2309 | 2427 | 2521 | 2693 | 2882 | 3029 | 3124 | 3177 | 3372 | 3643 | 4234 |
Better Fuel Economy Factory Ratios Increased Power
