Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 30/9.5-15 | 255/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.99 (761.78) | 29.06 (738) | -0.94 (-23.78) -3.1% |
| Width inches (mm) | 9.49 (241) | 10.04 (255) | 0.55 (14) 5.8% |
| Circum. inches (mm) | 94.22 (2393.2) | 91.28 (2318.5) | -2.94 (-74.71) -3.1% |
| Sidewall Height inches (mm) | 7.5 (190.39) | 7.03 (178.5) | -0.47 (-11.89) -6.2% |
| Revolutions per mile (km) | 672.46 (417.85) | 694.13 (431.31) | 21.67 (13.46) 3.2% |
255/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.38 mph (31.18 km/h) |
| 25 mph (40.23 km/h) | 24.22 mph (38.98 km/h) |
| 30 mph (48.28 km/h) | 29.06 mph (46.77 km/h) |
| 35 mph (56.33 km/h) | 33.91 mph (54.57 km/h) |
| 40 mph (64.37 km/h) | 38.75 mph (62.36 km/h) |
| 45 mph (72.42 km/h) | 43.6 mph (70.16 km/h) |
| 50 mph (80.47 km/h) | 48.44 mph (77.96 km/h) |
| 55 mph (88.51 km/h) | 53.28 mph (85.75 km/h) |
| 60 mph (96.56 km/h) | 58.13 mph (93.55 km/h) |
| 65 mph (104.61 km/h) | 62.97 mph (101.34 km/h) |
| 70 mph (112.65 km/h) | 67.81 mph (109.14 km/h) |
| 75 mph (120.7 km/h) | 72.66 mph (116.93 km/h) |
| 80 mph (128.75 km/h) | 77.5 mph (124.73 km/h) |
| 85 mph (136.79 km/h) | 82.35 mph (132.52 km/h) |
| 90 mph (144.84 km/h) | 87.19 mph (140.32 km/h) |
| 95 mph (152.89 km/h) | 92.03 mph (148.12 km/h) |
| 100 mph (160.93 km/h) | 96.88 mph (155.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1766 | 2052 | 2210 | 2308 | 2413 | 2488 | 2571 | 2668 | 2804 | 2939 | 3089 | 3210 | 3428 | 3668 | 3856 | 3976 | 4044 | 4292 | 4638 | 5390 |
Better Fuel Economy Factory Ratios Increased Power
