Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 37/13.5-28 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 36.91 (937.58) | -0.53 (-13.42) -1.4% |
| Width inches (mm) | 12.4 (315) | 13.5 (343) | 1.1 (28) 8.9% |
| Circum. inches (mm) | 117.62 (2987.65) | 115.96 (2945.49) | -1.66 (-42.16) -1.4% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 4.46 (113.19) | 0.74 (18.69) 19.8% |
| Revolutions per mile (km) | 538.66 (334.71) | 546.37 (339.5) | 7.71 (4.79) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.73 km/h) |
| 25 mph (40.23 km/h) | 24.65 mph (39.67 km/h) |
| 30 mph (48.28 km/h) | 29.58 mph (47.6 km/h) |
| 35 mph (56.33 km/h) | 34.51 mph (55.53 km/h) |
| 40 mph (64.37 km/h) | 39.44 mph (63.47 km/h) |
| 45 mph (72.42 km/h) | 44.36 mph (71.4 km/h) |
| 50 mph (80.47 km/h) | 49.29 mph (79.33 km/h) |
| 55 mph (88.51 km/h) | 54.22 mph (87.27 km/h) |
| 60 mph (96.56 km/h) | 59.15 mph (95.2 km/h) |
| 65 mph (104.61 km/h) | 64.08 mph (103.13 km/h) |
| 70 mph (112.65 km/h) | 69.01 mph (111.06 km/h) |
| 75 mph (120.7 km/h) | 73.94 mph (119 km/h) |
| 80 mph (128.75 km/h) | 78.87 mph (126.93 km/h) |
| 85 mph (136.79 km/h) | 83.8 mph (134.86 km/h) |
| 90 mph (144.84 km/h) | 88.73 mph (142.8 km/h) |
| 95 mph (152.89 km/h) | 93.66 mph (150.73 km/h) |
| 100 mph (160.93 km/h) | 98.59 mph (158.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1390 | 1615 | 1740 | 1816 | 1899 | 1958 | 2024 | 2100 | 2207 | 2313 | 2432 | 2526 | 2698 | 2887 | 3035 | 3130 | 3183 | 3378 | 3651 | 4242 |
Better Fuel Economy Factory Ratios Increased Power
