Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/70-16 | 225/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.4 (721.4) | 27.74 (704.7) | -0.66 (-16.7) -2.3% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 89.23 (2266.34) | 87.16 (2213.88) | -2.07 (-52.46) -2.3% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 4.87 (123.75) | -1.33 (-33.75) -21.4% |
| Revolutions per mile (km) | 710.11 (441.24) | 726.93 (451.69) | 16.83 (10.46) 2.4% |
225/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.44 km/h) |
| 25 mph (40.23 km/h) | 24.42 mph (39.3 km/h) |
| 30 mph (48.28 km/h) | 29.31 mph (47.16 km/h) |
| 35 mph (56.33 km/h) | 34.19 mph (55.02 km/h) |
| 40 mph (64.37 km/h) | 39.07 mph (62.88 km/h) |
| 45 mph (72.42 km/h) | 43.96 mph (70.74 km/h) |
| 50 mph (80.47 km/h) | 48.84 mph (78.6 km/h) |
| 55 mph (88.51 km/h) | 53.73 mph (86.47 km/h) |
| 60 mph (96.56 km/h) | 58.61 mph (94.33 km/h) |
| 65 mph (104.61 km/h) | 63.5 mph (102.19 km/h) |
| 70 mph (112.65 km/h) | 68.38 mph (110.05 km/h) |
| 75 mph (120.7 km/h) | 73.26 mph (117.91 km/h) |
| 80 mph (128.75 km/h) | 78.15 mph (125.77 km/h) |
| 85 mph (136.79 km/h) | 83.03 mph (133.63 km/h) |
| 90 mph (144.84 km/h) | 87.92 mph (141.49 km/h) |
| 95 mph (152.89 km/h) | 92.8 mph (149.35 km/h) |
| 100 mph (160.93 km/h) | 97.69 mph (157.21 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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