Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-17 | 225/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.89 (606.8) | 26.86 (682.2) | 2.97 (75.4) 12.4% |
| Width inches (mm) | 4.92 (125) | 8.86 (225) | 3.94 (100) 80% |
| Circum. inches (mm) | 75.05 (1906.32) | 84.38 (2143.19) | 9.33 (236.88) 12.4% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 4.43 (112.5) | 0.98 (25) 28.6% |
| Revolutions per mile (km) | 844.22 (524.57) | 750.91 (466.59) | -93.31 (-57.98) -11.1% |
225/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.49 mph (36.19 km/h) |
| 25 mph (40.23 km/h) | 28.11 mph (45.23 km/h) |
| 30 mph (48.28 km/h) | 33.73 mph (54.28 km/h) |
| 35 mph (56.33 km/h) | 39.35 mph (63.33 km/h) |
| 40 mph (64.37 km/h) | 44.97 mph (72.37 km/h) |
| 45 mph (72.42 km/h) | 50.59 mph (81.42 km/h) |
| 50 mph (80.47 km/h) | 56.21 mph (90.47 km/h) |
| 55 mph (88.51 km/h) | 61.83 mph (99.51 km/h) |
| 60 mph (96.56 km/h) | 67.46 mph (108.56 km/h) |
| 65 mph (104.61 km/h) | 73.08 mph (117.61 km/h) |
| 70 mph (112.65 km/h) | 78.7 mph (126.65 km/h) |
| 75 mph (120.7 km/h) | 84.32 mph (135.7 km/h) |
| 80 mph (128.75 km/h) | 89.94 mph (144.75 km/h) |
| 85 mph (136.79 km/h) | 95.56 mph (153.79 km/h) |
| 90 mph (144.84 km/h) | 101.18 mph (162.84 km/h) |
| 95 mph (152.89 km/h) | 106.8 mph (171.89 km/h) |
| 100 mph (160.93 km/h) | 112.43 mph (180.93 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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