Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/80-15 | 215/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.54 (725) | 29.39 (746.5) | 0.85 (21.5) 3% |
| Width inches (mm) | 8.46 (215) | 8.46 (215) | 0 (0) 0% |
| Circum. inches (mm) | 89.67 (2277.65) | 92.33 (2345.2) | 2.66 (67.54) 3% |
| Sidewall Height inches (mm) | 6.77 (172) | 7.19 (182.75) | 0.42 (10.75) 6.3% |
| Revolutions per mile (km) | 706.58 (439.05) | 686.23 (426.4) | -20.35 (-12.65) -2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.59 mph (33.14 km/h) |
| 25 mph (40.23 km/h) | 25.74 mph (41.43 km/h) |
| 30 mph (48.28 km/h) | 30.89 mph (49.71 km/h) |
| 35 mph (56.33 km/h) | 36.04 mph (58 km/h) |
| 40 mph (64.37 km/h) | 41.19 mph (66.28 km/h) |
| 45 mph (72.42 km/h) | 46.33 mph (74.57 km/h) |
| 50 mph (80.47 km/h) | 51.48 mph (82.85 km/h) |
| 55 mph (88.51 km/h) | 56.63 mph (91.14 km/h) |
| 60 mph (96.56 km/h) | 61.78 mph (99.42 km/h) |
| 65 mph (104.61 km/h) | 66.93 mph (107.71 km/h) |
| 70 mph (112.65 km/h) | 72.08 mph (116 km/h) |
| 75 mph (120.7 km/h) | 77.22 mph (124.28 km/h) |
| 80 mph (128.75 km/h) | 82.37 mph (132.57 km/h) |
| 85 mph (136.79 km/h) | 87.52 mph (140.85 km/h) |
| 90 mph (144.84 km/h) | 92.67 mph (149.14 km/h) |
| 95 mph (152.89 km/h) | 97.82 mph (157.42 km/h) |
| 100 mph (160.93 km/h) | 102.97 mph (165.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1746 | 2029 | 2185 | 2281 | 2385 | 2460 | 2541 | 2638 | 2772 | 2906 | 3054 | 3173 | 3389 | 3626 | 3812 | 3931 | 3998 | 4243 | 4585 | 5328 |
Better Fuel Economy Factory Ratios Increased Power
