Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/60-18 | 225/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.63 (727.2) | 27.74 (704.7) | -0.89 (-22.5) -3.1% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 89.94 (2284.57) | 87.16 (2213.88) | -2.78 (-70.69) -3.1% |
| Sidewall Height inches (mm) | 5.31 (135) | 4.87 (123.75) | -0.44 (-11.25) -8.3% |
| Revolutions per mile (km) | 704.44 (437.72) | 726.93 (451.69) | 22.49 (13.98) 3.2% |
225/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.38 mph (31.19 km/h) |
| 25 mph (40.23 km/h) | 24.23 mph (38.99 km/h) |
| 30 mph (48.28 km/h) | 29.07 mph (46.79 km/h) |
| 35 mph (56.33 km/h) | 33.92 mph (54.58 km/h) |
| 40 mph (64.37 km/h) | 38.76 mph (62.38 km/h) |
| 45 mph (72.42 km/h) | 43.61 mph (70.18 km/h) |
| 50 mph (80.47 km/h) | 48.45 mph (77.98 km/h) |
| 55 mph (88.51 km/h) | 53.3 mph (85.78 km/h) |
| 60 mph (96.56 km/h) | 58.14 mph (93.57 km/h) |
| 65 mph (104.61 km/h) | 62.99 mph (101.37 km/h) |
| 70 mph (112.65 km/h) | 67.83 mph (109.17 km/h) |
| 75 mph (120.7 km/h) | 72.68 mph (116.97 km/h) |
| 80 mph (128.75 km/h) | 77.52 mph (124.76 km/h) |
| 85 mph (136.79 km/h) | 82.37 mph (132.56 km/h) |
| 90 mph (144.84 km/h) | 87.22 mph (140.36 km/h) |
| 95 mph (152.89 km/h) | 92.06 mph (148.16 km/h) |
| 100 mph (160.93 km/h) | 96.91 mph (155.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1850 | 2149 | 2314 | 2417 | 2527 | 2606 | 2692 | 2795 | 2936 | 3078 | 3235 | 3361 | 3590 | 3842 | 4038 | 4164 | 4235 | 4495 | 4857 | 5644 |
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