Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/80-15 | 225/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.17 (741) | 30.06 (763.5) | 0.89 (22.5) 3% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 91.65 (2327.92) | 94.43 (2398.61) | 2.78 (70.69) 3% |
| Sidewall Height inches (mm) | 7.09 (180) | 7.53 (191.25) | 0.44 (11.25) 6.3% |
| Revolutions per mile (km) | 691.32 (429.57) | 670.95 (416.91) | -20.37 (-12.66) -2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.61 mph (33.16 km/h) |
| 25 mph (40.23 km/h) | 25.76 mph (41.46 km/h) |
| 30 mph (48.28 km/h) | 30.91 mph (49.75 km/h) |
| 35 mph (56.33 km/h) | 36.06 mph (58.04 km/h) |
| 40 mph (64.37 km/h) | 41.21 mph (66.33 km/h) |
| 45 mph (72.42 km/h) | 46.37 mph (74.62 km/h) |
| 50 mph (80.47 km/h) | 51.52 mph (82.91 km/h) |
| 55 mph (88.51 km/h) | 56.67 mph (91.2 km/h) |
| 60 mph (96.56 km/h) | 61.82 mph (99.49 km/h) |
| 65 mph (104.61 km/h) | 66.97 mph (107.78 km/h) |
| 70 mph (112.65 km/h) | 72.13 mph (116.07 km/h) |
| 75 mph (120.7 km/h) | 77.28 mph (124.37 km/h) |
| 80 mph (128.75 km/h) | 82.43 mph (132.66 km/h) |
| 85 mph (136.79 km/h) | 87.58 mph (140.95 km/h) |
| 90 mph (144.84 km/h) | 92.73 mph (149.24 km/h) |
| 95 mph (152.89 km/h) | 97.88 mph (157.53 km/h) |
| 100 mph (160.93 km/h) | 103.04 mph (165.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1707 | 1984 | 2136 | 2231 | 2332 | 2405 | 2485 | 2579 | 2710 | 2841 | 2986 | 3102 | 3313 | 3546 | 3727 | 3844 | 3909 | 4149 | 4483 | 5210 |
Better Fuel Economy Factory Ratios Increased Power
