Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/45-18 | 235/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.62 (650.7) | 26.33 (668.7) | 0.71 (18) 2.8% |
| Width inches (mm) | 8.46 (215) | 9.25 (235) | 0.79 (20) 9.3% |
| Circum. inches (mm) | 80.48 (2044.23) | 82.71 (2100.78) | 2.23 (56.55) 2.8% |
| Sidewall Height inches (mm) | 3.81 (96.75) | 4.16 (105.75) | 0.35 (9) 9.3% |
| Revolutions per mile (km) | 787.26 (489.18) | 766.07 (476.01) | -21.19 (-13.17) -2.7% |
235/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.55 mph (33.08 km/h) |
| 25 mph (40.23 km/h) | 25.69 mph (41.35 km/h) |
| 30 mph (48.28 km/h) | 30.83 mph (49.62 km/h) |
| 35 mph (56.33 km/h) | 35.97 mph (57.89 km/h) |
| 40 mph (64.37 km/h) | 41.11 mph (66.15 km/h) |
| 45 mph (72.42 km/h) | 46.24 mph (74.42 km/h) |
| 50 mph (80.47 km/h) | 51.38 mph (82.69 km/h) |
| 55 mph (88.51 km/h) | 56.52 mph (90.96 km/h) |
| 60 mph (96.56 km/h) | 61.66 mph (99.23 km/h) |
| 65 mph (104.61 km/h) | 66.8 mph (107.5 km/h) |
| 70 mph (112.65 km/h) | 71.94 mph (115.77 km/h) |
| 75 mph (120.7 km/h) | 77.07 mph (124.04 km/h) |
| 80 mph (128.75 km/h) | 82.21 mph (132.31 km/h) |
| 85 mph (136.79 km/h) | 87.35 mph (140.58 km/h) |
| 90 mph (144.84 km/h) | 92.49 mph (148.85 km/h) |
| 95 mph (152.89 km/h) | 97.63 mph (157.12 km/h) |
| 100 mph (160.93 km/h) | 102.77 mph (165.39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1949 | 2265 | 2439 | 2547 | 2663 | 2746 | 2837 | 2945 | 3094 | 3244 | 3410 | 3542 | 3783 | 4048 | 4256 | 4388 | 4463 | 4737 | 5118 | 5948 |
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