Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/60-18 | 225/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.1 (739.2) | 26.86 (682.2) | -2.24 (-57) -7.7% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 91.43 (2322.27) | 84.38 (2143.19) | -7.05 (-179.07) -7.7% |
| Sidewall Height inches (mm) | 5.55 (141) | 4.43 (112.5) | -1.12 (-28.5) -20.2% |
| Revolutions per mile (km) | 693.01 (430.61) | 750.91 (466.59) | 57.9 (35.98) 8.4% |
225/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.46 mph (29.7 km/h) |
| 25 mph (40.23 km/h) | 23.07 mph (37.13 km/h) |
| 30 mph (48.28 km/h) | 27.69 mph (44.56 km/h) |
| 35 mph (56.33 km/h) | 32.3 mph (51.98 km/h) |
| 40 mph (64.37 km/h) | 36.92 mph (59.41 km/h) |
| 45 mph (72.42 km/h) | 41.53 mph (66.84 km/h) |
| 50 mph (80.47 km/h) | 46.14 mph (74.26 km/h) |
| 55 mph (88.51 km/h) | 50.76 mph (81.69 km/h) |
| 60 mph (96.56 km/h) | 55.37 mph (89.11 km/h) |
| 65 mph (104.61 km/h) | 59.99 mph (96.54 km/h) |
| 70 mph (112.65 km/h) | 64.6 mph (103.97 km/h) |
| 75 mph (120.7 km/h) | 69.22 mph (111.39 km/h) |
| 80 mph (128.75 km/h) | 73.83 mph (118.82 km/h) |
| 85 mph (136.79 km/h) | 78.45 mph (126.25 km/h) |
| 90 mph (144.84 km/h) | 83.06 mph (133.67 km/h) |
| 95 mph (152.89 km/h) | 87.67 mph (141.1 km/h) |
| 100 mph (160.93 km/h) | 92.29 mph (148.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1911 | 2220 | 2391 | 2496 | 2610 | 2692 | 2781 | 2887 | 3033 | 3179 | 3342 | 3472 | 3708 | 3968 | 4171 | 4302 | 4375 | 4643 | 5017 | 5830 |
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