Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-15 | 225/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.73 (780.5) | 28.29 (718.5) | -2.44 (-62) -7.9% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 96.54 (2452.01) | 88.87 (2257.23) | -7.67 (-194.78) -7.9% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 6.64 (168.75) | -1.22 (-31) -15.5% |
| Revolutions per mile (km) | 656.34 (407.83) | 712.97 (443.02) | 56.64 (35.19) 8.6% |
225/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.41 mph (29.63 km/h) |
| 25 mph (40.23 km/h) | 23.01 mph (37.04 km/h) |
| 30 mph (48.28 km/h) | 27.62 mph (44.45 km/h) |
| 35 mph (56.33 km/h) | 32.22 mph (51.85 km/h) |
| 40 mph (64.37 km/h) | 36.82 mph (59.26 km/h) |
| 45 mph (72.42 km/h) | 41.43 mph (66.67 km/h) |
| 50 mph (80.47 km/h) | 46.03 mph (74.08 km/h) |
| 55 mph (88.51 km/h) | 50.63 mph (81.48 km/h) |
| 60 mph (96.56 km/h) | 55.23 mph (88.89 km/h) |
| 65 mph (104.61 km/h) | 59.84 mph (96.3 km/h) |
| 70 mph (112.65 km/h) | 64.44 mph (103.71 km/h) |
| 75 mph (120.7 km/h) | 69.04 mph (111.11 km/h) |
| 80 mph (128.75 km/h) | 73.65 mph (118.52 km/h) |
| 85 mph (136.79 km/h) | 78.25 mph (125.93 km/h) |
| 90 mph (144.84 km/h) | 82.85 mph (133.34 km/h) |
| 95 mph (152.89 km/h) | 87.45 mph (140.74 km/h) |
| 100 mph (160.93 km/h) | 92.06 mph (148.15 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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