Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 28/9-15 | 28/8.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.98 (710.76) | 27.93 (709.32) | -0.06 (-1.44) -0.2% |
| Width inches (mm) | 9.02 (229) | 8.5 (216) | -0.51 (-13) -5.7% |
| Circum. inches (mm) | 87.91 (2232.92) | 87.73 (2228.39) | -0.18 (-4.52) -0.2% |
| Sidewall Height inches (mm) | 6.49 (164.88) | 6.46 (164.16) | -0.03 (-0.72) -0.4% |
| Revolutions per mile (km) | 720.74 (447.84) | 722.2 (448.75) | 1.46 (0.91) 0.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.96 mph (32.12 km/h) |
| 25 mph (40.23 km/h) | 24.95 mph (40.15 km/h) |
| 30 mph (48.28 km/h) | 29.94 mph (48.18 km/h) |
| 35 mph (56.33 km/h) | 34.93 mph (56.21 km/h) |
| 40 mph (64.37 km/h) | 39.92 mph (64.24 km/h) |
| 45 mph (72.42 km/h) | 44.91 mph (72.27 km/h) |
| 50 mph (80.47 km/h) | 49.9 mph (80.3 km/h) |
| 55 mph (88.51 km/h) | 54.89 mph (88.33 km/h) |
| 60 mph (96.56 km/h) | 59.88 mph (96.37 km/h) |
| 65 mph (104.61 km/h) | 64.87 mph (104.4 km/h) |
| 70 mph (112.65 km/h) | 69.86 mph (112.43 km/h) |
| 75 mph (120.7 km/h) | 74.85 mph (120.46 km/h) |
| 80 mph (128.75 km/h) | 79.84 mph (128.49 km/h) |
| 85 mph (136.79 km/h) | 84.83 mph (136.52 km/h) |
| 90 mph (144.84 km/h) | 89.82 mph (144.55 km/h) |
| 95 mph (152.89 km/h) | 94.81 mph (152.58 km/h) |
| 100 mph (160.93 km/h) | 99.8 mph (160.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1838 | 2135 | 2299 | 2401 | 2510 | 2589 | 2675 | 2776 | 2917 | 3058 | 3214 | 3339 | 3566 | 3816 | 4012 | 4137 | 4208 | 4466 | 4825 | 5607 |
Better Fuel Economy Factory Ratios Increased Power
