Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 27/8.5-15 | 225/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.08 (687.72) | 30.94 (786) | 3.87 (98.28) 14.3% |
| Width inches (mm) | 8.5 (216) | 8.86 (225) | 0.35 (9) 4.2% |
| Circum. inches (mm) | 85.06 (2160.54) | 97.22 (2469.29) | 12.16 (308.76) 14.3% |
| Sidewall Height inches (mm) | 6.04 (153.36) | 7.97 (202.5) | 1.93 (49.14) 32% |
| Revolutions per mile (km) | 744.88 (462.85) | 651.74 (404.97) | -93.14 (-57.87) -12.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.86 mph (36.79 km/h) |
| 25 mph (40.23 km/h) | 28.57 mph (45.98 km/h) |
| 30 mph (48.28 km/h) | 34.29 mph (55.18 km/h) |
| 35 mph (56.33 km/h) | 40 mph (64.38 km/h) |
| 40 mph (64.37 km/h) | 45.72 mph (73.57 km/h) |
| 45 mph (72.42 km/h) | 51.43 mph (82.77 km/h) |
| 50 mph (80.47 km/h) | 57.15 mph (91.97 km/h) |
| 55 mph (88.51 km/h) | 62.86 mph (101.16 km/h) |
| 60 mph (96.56 km/h) | 68.57 mph (110.36 km/h) |
| 65 mph (104.61 km/h) | 74.29 mph (119.56 km/h) |
| 70 mph (112.65 km/h) | 80 mph (128.75 km/h) |
| 75 mph (120.7 km/h) | 85.72 mph (137.95 km/h) |
| 80 mph (128.75 km/h) | 91.43 mph (147.15 km/h) |
| 85 mph (136.79 km/h) | 97.15 mph (156.34 km/h) |
| 90 mph (144.84 km/h) | 102.86 mph (165.54 km/h) |
| 95 mph (152.89 km/h) | 108.58 mph (174.74 km/h) |
| 100 mph (160.93 km/h) | 114.29 mph (183.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1659 | 1927 | 2075 | 2167 | 2266 | 2336 | 2414 | 2505 | 2633 | 2760 | 2901 | 3014 | 3218 | 3444 | 3621 | 3734 | 3797 | 4030 | 4355 | 5060 |
Better Fuel Economy Factory Ratios Increased Power
