Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/40-18 | 215/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.4 (645.2) | 25.46 (646.8) | 0.06 (1.6) 0.2% |
| Width inches (mm) | 9.25 (235) | 8.46 (215) | -0.79 (-20) -8.5% |
| Circum. inches (mm) | 79.8 (2026.96) | 80 (2031.98) | 0.2 (5.03) 0.2% |
| Sidewall Height inches (mm) | 3.7 (94) | 4.23 (107.5) | 0.53 (13.5) 14.4% |
| Revolutions per mile (km) | 793.97 (493.35) | 792.01 (492.13) | -1.96 (-1.22) -0.2% |
215/50-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.05 mph (32.27 km/h) |
| 25 mph (40.23 km/h) | 25.06 mph (40.33 km/h) |
| 30 mph (48.28 km/h) | 30.07 mph (48.4 km/h) |
| 35 mph (56.33 km/h) | 35.09 mph (56.47 km/h) |
| 40 mph (64.37 km/h) | 40.1 mph (64.53 km/h) |
| 45 mph (72.42 km/h) | 45.11 mph (72.6 km/h) |
| 50 mph (80.47 km/h) | 50.12 mph (80.67 km/h) |
| 55 mph (88.51 km/h) | 55.14 mph (88.73 km/h) |
| 60 mph (96.56 km/h) | 60.15 mph (96.8 km/h) |
| 65 mph (104.61 km/h) | 65.16 mph (104.87 km/h) |
| 70 mph (112.65 km/h) | 70.17 mph (112.93 km/h) |
| 75 mph (120.7 km/h) | 75.19 mph (121 km/h) |
| 80 mph (128.75 km/h) | 80.2 mph (129.07 km/h) |
| 85 mph (136.79 km/h) | 85.21 mph (137.13 km/h) |
| 90 mph (144.84 km/h) | 90.22 mph (145.2 km/h) |
| 95 mph (152.89 km/h) | 95.24 mph (153.27 km/h) |
| 100 mph (160.93 km/h) | 100.25 mph (161.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2016 | 2341 | 2522 | 2633 | 2753 | 2839 | 2933 | 3045 | 3199 | 3353 | 3525 | 3662 | 3911 | 4185 | 4400 | 4537 | 4614 | 4897 | 5292 | 6149 |
Better Fuel Economy Factory Ratios Increased Power
