Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 37/13.5-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 37.07 (941.66) | -0.37 (-9.34) -1% |
| Width inches (mm) | 12.4 (315) | 13.5 (343) | 1.1 (28) 8.9% |
| Circum. inches (mm) | 117.62 (2987.65) | 116.47 (2958.31) | -1.16 (-29.34) -1% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 5.54 (140.63) | 1.82 (46.13) 48.8% |
| Revolutions per mile (km) | 538.66 (334.71) | 544.01 (338.03) | 5.34 (3.32) 1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.8 mph (31.87 km/h) |
| 25 mph (40.23 km/h) | 24.75 mph (39.84 km/h) |
| 30 mph (48.28 km/h) | 29.71 mph (47.81 km/h) |
| 35 mph (56.33 km/h) | 34.66 mph (55.77 km/h) |
| 40 mph (64.37 km/h) | 39.61 mph (63.74 km/h) |
| 45 mph (72.42 km/h) | 44.56 mph (71.71 km/h) |
| 50 mph (80.47 km/h) | 49.51 mph (79.68 km/h) |
| 55 mph (88.51 km/h) | 54.46 mph (87.64 km/h) |
| 60 mph (96.56 km/h) | 59.41 mph (95.61 km/h) |
| 65 mph (104.61 km/h) | 64.36 mph (103.58 km/h) |
| 70 mph (112.65 km/h) | 69.31 mph (111.55 km/h) |
| 75 mph (120.7 km/h) | 74.26 mph (119.52 km/h) |
| 80 mph (128.75 km/h) | 79.21 mph (127.48 km/h) |
| 85 mph (136.79 km/h) | 84.17 mph (135.45 km/h) |
| 90 mph (144.84 km/h) | 89.12 mph (143.42 km/h) |
| 95 mph (152.89 km/h) | 94.07 mph (151.39 km/h) |
| 100 mph (160.93 km/h) | 99.02 mph (159.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1384 | 1608 | 1732 | 1809 | 1891 | 1950 | 2015 | 2091 | 2197 | 2303 | 2421 | 2515 | 2686 | 2875 | 3022 | 3116 | 3169 | 3364 | 3635 | 4224 |
Better Fuel Economy Factory Ratios Increased Power
