Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 28/8.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 27.93 (709.32) | 0.85 (21.6) 3.1% |
| Width inches (mm) | 8.5 (216) | 8.5 (216) | 0 (0) 0% |
| Circum. inches (mm) | 85.06 (2160.54) | 87.73 (2228.39) | 2.67 (67.86) 3.1% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 6.46 (164.16) | 0.43 (10.8) 7% |
| Revolutions per mile (km) | 744.88 (462.85) | 722.2 (448.75) | -22.68 (-14.09) -3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.63 mph (33.2 km/h) |
| 25 mph (40.23 km/h) | 25.79 mph (41.5 km/h) |
| 30 mph (48.28 km/h) | 30.94 mph (49.8 km/h) |
| 35 mph (56.33 km/h) | 36.1 mph (58.1 km/h) |
| 40 mph (64.37 km/h) | 41.26 mph (66.4 km/h) |
| 45 mph (72.42 km/h) | 46.41 mph (74.7 km/h) |
| 50 mph (80.47 km/h) | 51.57 mph (82.99 km/h) |
| 55 mph (88.51 km/h) | 56.73 mph (91.29 km/h) |
| 60 mph (96.56 km/h) | 61.88 mph (99.59 km/h) |
| 65 mph (104.61 km/h) | 67.04 mph (107.89 km/h) |
| 70 mph (112.65 km/h) | 72.2 mph (116.19 km/h) |
| 75 mph (120.7 km/h) | 77.36 mph (124.49 km/h) |
| 80 mph (128.75 km/h) | 82.51 mph (132.79 km/h) |
| 85 mph (136.79 km/h) | 87.67 mph (141.09 km/h) |
| 90 mph (144.84 km/h) | 92.83 mph (149.39 km/h) |
| 95 mph (152.89 km/h) | 97.98 mph (157.69 km/h) |
| 100 mph (160.93 km/h) | 103.14 mph (165.99 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
