Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 28/9-15 | 28/9.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.98 (710.76) | 27.9 (708.76) | -0.08 (-2) -0.3% |
| Width inches (mm) | 9.02 (229) | 9.49 (241) | 0.47 (12) 5.2% |
| Circum. inches (mm) | 87.91 (2232.92) | 87.66 (2226.64) | -0.25 (-6.28) -0.3% |
| Sidewall Height inches (mm) | 6.49 (164.88) | 6.45 (163.88) | -0.04 (-1) -0.6% |
| Revolutions per mile (km) | 720.74 (447.84) | 722.77 (449.11) | 2.03 (1.26) 0.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.94 mph (32.1 km/h) |
| 25 mph (40.23 km/h) | 24.93 mph (40.12 km/h) |
| 30 mph (48.28 km/h) | 29.92 mph (48.14 km/h) |
| 35 mph (56.33 km/h) | 34.9 mph (56.17 km/h) |
| 40 mph (64.37 km/h) | 39.89 mph (64.19 km/h) |
| 45 mph (72.42 km/h) | 44.87 mph (72.22 km/h) |
| 50 mph (80.47 km/h) | 49.86 mph (80.24 km/h) |
| 55 mph (88.51 km/h) | 54.85 mph (88.27 km/h) |
| 60 mph (96.56 km/h) | 59.83 mph (96.29 km/h) |
| 65 mph (104.61 km/h) | 64.82 mph (104.31 km/h) |
| 70 mph (112.65 km/h) | 69.8 mph (112.34 km/h) |
| 75 mph (120.7 km/h) | 74.79 mph (120.36 km/h) |
| 80 mph (128.75 km/h) | 79.77 mph (128.39 km/h) |
| 85 mph (136.79 km/h) | 84.76 mph (136.41 km/h) |
| 90 mph (144.84 km/h) | 89.75 mph (144.43 km/h) |
| 95 mph (152.89 km/h) | 94.73 mph (152.46 km/h) |
| 100 mph (160.93 km/h) | 99.72 mph (160.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1839 | 2137 | 2301 | 2403 | 2512 | 2591 | 2677 | 2779 | 2919 | 3060 | 3217 | 3342 | 3569 | 3820 | 4015 | 4140 | 4211 | 4469 | 4829 | 5612 |
Better Fuel Economy Factory Ratios Increased Power
