Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/65-15 | 215/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.93 (582.5) | 29.39 (746.5) | 6.46 (164) 28.2% |
| Width inches (mm) | 6.1 (155) | 8.46 (215) | 2.36 (60) 38.7% |
| Circum. inches (mm) | 72.05 (1829.98) | 92.33 (2345.2) | 20.28 (515.22) 28.2% |
| Sidewall Height inches (mm) | 3.97 (100.75) | 7.19 (182.75) | 3.23 (82) 81.4% |
| Revolutions per mile (km) | 879.43 (546.45) | 686.23 (426.4) | -193.2 (-120.05) -22% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.63 mph (41.25 km/h) |
| 25 mph (40.23 km/h) | 32.04 mph (51.56 km/h) |
| 30 mph (48.28 km/h) | 38.45 mph (61.87 km/h) |
| 35 mph (56.33 km/h) | 44.85 mph (72.19 km/h) |
| 40 mph (64.37 km/h) | 51.26 mph (82.5 km/h) |
| 45 mph (72.42 km/h) | 57.67 mph (92.81 km/h) |
| 50 mph (80.47 km/h) | 64.08 mph (103.12 km/h) |
| 55 mph (88.51 km/h) | 70.48 mph (113.43 km/h) |
| 60 mph (96.56 km/h) | 76.89 mph (123.75 km/h) |
| 65 mph (104.61 km/h) | 83.3 mph (134.06 km/h) |
| 70 mph (112.65 km/h) | 89.71 mph (144.37 km/h) |
| 75 mph (120.7 km/h) | 96.12 mph (154.68 km/h) |
| 80 mph (128.75 km/h) | 102.52 mph (165 km/h) |
| 85 mph (136.79 km/h) | 108.93 mph (175.31 km/h) |
| 90 mph (144.84 km/h) | 115.34 mph (185.62 km/h) |
| 95 mph (152.89 km/h) | 121.75 mph (195.93 km/h) |
| 100 mph (160.93 km/h) | 128.15 mph (206.25 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
