Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/60-18 | 235/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.1 (739.2) | 28.18 (715.7) | -0.93 (-23.5) -3.2% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 91.43 (2322.27) | 88.52 (2248.44) | -2.91 (-73.83) -3.2% |
| Sidewall Height inches (mm) | 5.55 (141) | 5.09 (129.25) | -0.46 (-11.75) -8.3% |
| Revolutions per mile (km) | 693.01 (430.61) | 715.76 (444.75) | 22.75 (14.14) 3.3% |
235/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.36 mph (31.16 km/h) |
| 25 mph (40.23 km/h) | 24.21 mph (38.95 km/h) |
| 30 mph (48.28 km/h) | 29.05 mph (46.75 km/h) |
| 35 mph (56.33 km/h) | 33.89 mph (54.54 km/h) |
| 40 mph (64.37 km/h) | 38.73 mph (62.33 km/h) |
| 45 mph (72.42 km/h) | 43.57 mph (70.12 km/h) |
| 50 mph (80.47 km/h) | 48.41 mph (77.91 km/h) |
| 55 mph (88.51 km/h) | 53.25 mph (85.7 km/h) |
| 60 mph (96.56 km/h) | 58.09 mph (93.49 km/h) |
| 65 mph (104.61 km/h) | 62.93 mph (101.28 km/h) |
| 70 mph (112.65 km/h) | 67.77 mph (109.07 km/h) |
| 75 mph (120.7 km/h) | 72.62 mph (116.86 km/h) |
| 80 mph (128.75 km/h) | 77.46 mph (124.65 km/h) |
| 85 mph (136.79 km/h) | 82.3 mph (132.45 km/h) |
| 90 mph (144.84 km/h) | 87.14 mph (140.24 km/h) |
| 95 mph (152.89 km/h) | 91.98 mph (148.03 km/h) |
| 100 mph (160.93 km/h) | 96.82 mph (155.82 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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