Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-15 | 255/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.32 (821) | 29.06 (738) | -3.27 (-83) -10.1% |
| Width inches (mm) | 10.83 (275) | 10.04 (255) | -0.79 (-20) -7.3% |
| Circum. inches (mm) | 101.55 (2579.25) | 91.28 (2318.5) | -10.27 (-260.75) -10.1% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.03 (178.5) | -1.63 (-41.5) -18.9% |
| Revolutions per mile (km) | 623.96 (387.71) | 694.13 (431.31) | 70.17 (43.6) 11.2% |
255/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.98 mph (28.93 km/h) |
| 25 mph (40.23 km/h) | 22.47 mph (36.17 km/h) |
| 30 mph (48.28 km/h) | 26.97 mph (43.4 km/h) |
| 35 mph (56.33 km/h) | 31.46 mph (50.63 km/h) |
| 40 mph (64.37 km/h) | 35.96 mph (57.87 km/h) |
| 45 mph (72.42 km/h) | 40.45 mph (65.1 km/h) |
| 50 mph (80.47 km/h) | 44.95 mph (72.33 km/h) |
| 55 mph (88.51 km/h) | 49.44 mph (79.57 km/h) |
| 60 mph (96.56 km/h) | 53.93 mph (86.8 km/h) |
| 65 mph (104.61 km/h) | 58.43 mph (94.03 km/h) |
| 70 mph (112.65 km/h) | 62.92 mph (101.27 km/h) |
| 75 mph (120.7 km/h) | 67.42 mph (108.5 km/h) |
| 80 mph (128.75 km/h) | 71.91 mph (115.73 km/h) |
| 85 mph (136.79 km/h) | 76.41 mph (122.97 km/h) |
| 90 mph (144.84 km/h) | 80.9 mph (130.2 km/h) |
| 95 mph (152.89 km/h) | 85.4 mph (137.43 km/h) |
| 100 mph (160.93 km/h) | 89.89 mph (144.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
