Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/55-15 | 225/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.18 (639.5) | 28.29 (718.5) | 3.11 (79) 12.4% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 79.1 (2009.05) | 88.87 (2257.23) | 9.77 (248.19) 12.4% |
| Sidewall Height inches (mm) | 5.09 (129.25) | 6.64 (168.75) | 1.56 (39.5) 30.6% |
| Revolutions per mile (km) | 801.05 (497.75) | 712.97 (443.02) | -88.08 (-54.73) -11% |
225/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.47 mph (36.16 km/h) |
| 25 mph (40.23 km/h) | 28.09 mph (45.2 km/h) |
| 30 mph (48.28 km/h) | 33.71 mph (54.24 km/h) |
| 35 mph (56.33 km/h) | 39.32 mph (63.29 km/h) |
| 40 mph (64.37 km/h) | 44.94 mph (72.33 km/h) |
| 45 mph (72.42 km/h) | 50.56 mph (81.37 km/h) |
| 50 mph (80.47 km/h) | 56.18 mph (90.41 km/h) |
| 55 mph (88.51 km/h) | 61.79 mph (99.45 km/h) |
| 60 mph (96.56 km/h) | 67.41 mph (108.49 km/h) |
| 65 mph (104.61 km/h) | 73.03 mph (117.53 km/h) |
| 70 mph (112.65 km/h) | 78.65 mph (126.57 km/h) |
| 75 mph (120.7 km/h) | 84.27 mph (135.61 km/h) |
| 80 mph (128.75 km/h) | 89.88 mph (144.65 km/h) |
| 85 mph (136.79 km/h) | 95.5 mph (153.69 km/h) |
| 90 mph (144.84 km/h) | 101.12 mph (162.73 km/h) |
| 95 mph (152.89 km/h) | 106.74 mph (171.77 km/h) |
| 100 mph (160.93 km/h) | 112.35 mph (180.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1814 | 2108 | 2270 | 2370 | 2478 | 2556 | 2640 | 2741 | 2880 | 3019 | 3173 | 3297 | 3521 | 3768 | 3961 | 4084 | 4154 | 4409 | 4764 | 5536 |
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