Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-17 | 225/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.57 (674.8) | 26.86 (682.2) | 0.29 (7.4) 1.1% |
| Width inches (mm) | 5.31 (135) | 8.86 (225) | 3.54 (90) 66.7% |
| Circum. inches (mm) | 83.46 (2119.95) | 84.38 (2143.19) | 0.92 (23.25) 1.1% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 4.43 (112.5) | -0.35 (-9) -7.4% |
| Revolutions per mile (km) | 759.14 (471.71) | 750.91 (466.59) | -8.23 (-5.12) -1.1% |
225/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.22 mph (32.54 km/h) |
| 25 mph (40.23 km/h) | 25.27 mph (40.67 km/h) |
| 30 mph (48.28 km/h) | 30.33 mph (48.81 km/h) |
| 35 mph (56.33 km/h) | 35.38 mph (56.94 km/h) |
| 40 mph (64.37 km/h) | 40.44 mph (65.08 km/h) |
| 45 mph (72.42 km/h) | 45.49 mph (73.21 km/h) |
| 50 mph (80.47 km/h) | 50.55 mph (81.35 km/h) |
| 55 mph (88.51 km/h) | 55.6 mph (89.48 km/h) |
| 60 mph (96.56 km/h) | 60.66 mph (97.62 km/h) |
| 65 mph (104.61 km/h) | 65.71 mph (105.75 km/h) |
| 70 mph (112.65 km/h) | 70.77 mph (113.89 km/h) |
| 75 mph (120.7 km/h) | 75.82 mph (122.02 km/h) |
| 80 mph (128.75 km/h) | 80.88 mph (130.16 km/h) |
| 85 mph (136.79 km/h) | 85.93 mph (138.29 km/h) |
| 90 mph (144.84 km/h) | 90.99 mph (146.43 km/h) |
| 95 mph (152.89 km/h) | 96.04 mph (154.56 km/h) |
| 100 mph (160.93 km/h) | 101.1 mph (162.7 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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