Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/65-17 | 235/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28 (711.3) | 28.18 (715.7) | 0.17 (4.4) 0.6% |
| Width inches (mm) | 8.46 (215) | 9.25 (235) | 0.79 (20) 9.3% |
| Circum. inches (mm) | 87.98 (2234.61) | 88.52 (2248.44) | 0.54 (13.82) 0.6% |
| Sidewall Height inches (mm) | 5.5 (139.75) | 5.09 (129.25) | -0.41 (-10.5) -7.5% |
| Revolutions per mile (km) | 720.19 (447.5) | 715.76 (444.75) | -4.43 (-2.75) -0.6% |
235/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.12 mph (32.39 km/h) |
| 25 mph (40.23 km/h) | 25.15 mph (40.48 km/h) |
| 30 mph (48.28 km/h) | 30.19 mph (48.58 km/h) |
| 35 mph (56.33 km/h) | 35.22 mph (56.68 km/h) |
| 40 mph (64.37 km/h) | 40.25 mph (64.77 km/h) |
| 45 mph (72.42 km/h) | 45.28 mph (72.87 km/h) |
| 50 mph (80.47 km/h) | 50.31 mph (80.97 km/h) |
| 55 mph (88.51 km/h) | 55.34 mph (89.06 km/h) |
| 60 mph (96.56 km/h) | 60.37 mph (97.16 km/h) |
| 65 mph (104.61 km/h) | 65.4 mph (105.25 km/h) |
| 70 mph (112.65 km/h) | 70.43 mph (113.35 km/h) |
| 75 mph (120.7 km/h) | 75.46 mph (121.45 km/h) |
| 80 mph (128.75 km/h) | 80.49 mph (129.54 km/h) |
| 85 mph (136.79 km/h) | 85.53 mph (137.64 km/h) |
| 90 mph (144.84 km/h) | 90.56 mph (145.74 km/h) |
| 95 mph (152.89 km/h) | 95.59 mph (153.83 km/h) |
| 100 mph (160.93 km/h) | 100.62 mph (161.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1821 | 2116 | 2279 | 2380 | 2488 | 2566 | 2651 | 2752 | 2891 | 3031 | 3186 | 3310 | 3534 | 3782 | 3976 | 4100 | 4170 | 4426 | 4782 | 5557 |
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