Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-17 | 255/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.73 (831.3) | 33.06 (839.8) | 0.33 (8.5) 1% |
| Width inches (mm) | 9.25 (235) | 10.04 (255) | 0.79 (20) 8.5% |
| Circum. inches (mm) | 102.82 (2611.61) | 103.87 (2638.31) | 1.05 (26.7) 1% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 8.03 (204) | 0.17 (4.25) 2.1% |
| Revolutions per mile (km) | 616.23 (382.91) | 609.99 (379.03) | -6.24 (-3.88) -1% |
255/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.2 mph (32.52 km/h) |
| 25 mph (40.23 km/h) | 25.26 mph (40.65 km/h) |
| 30 mph (48.28 km/h) | 30.31 mph (48.77 km/h) |
| 35 mph (56.33 km/h) | 35.36 mph (56.9 km/h) |
| 40 mph (64.37 km/h) | 40.41 mph (65.03 km/h) |
| 45 mph (72.42 km/h) | 45.46 mph (73.16 km/h) |
| 50 mph (80.47 km/h) | 50.51 mph (81.29 km/h) |
| 55 mph (88.51 km/h) | 55.56 mph (89.42 km/h) |
| 60 mph (96.56 km/h) | 60.61 mph (97.55 km/h) |
| 65 mph (104.61 km/h) | 65.66 mph (105.68 km/h) |
| 70 mph (112.65 km/h) | 70.72 mph (113.81 km/h) |
| 75 mph (120.7 km/h) | 75.77 mph (121.94 km/h) |
| 80 mph (128.75 km/h) | 80.82 mph (130.06 km/h) |
| 85 mph (136.79 km/h) | 85.87 mph (138.19 km/h) |
| 90 mph (144.84 km/h) | 90.92 mph (146.32 km/h) |
| 95 mph (152.89 km/h) | 95.97 mph (154.45 km/h) |
| 100 mph (160.93 km/h) | 101.02 mph (162.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1552 | 1803 | 1942 | 2028 | 2120 | 2186 | 2259 | 2345 | 2464 | 2583 | 2715 | 2821 | 3012 | 3224 | 3389 | 3494 | 3554 | 3772 | 4076 | 4736 |
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