Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-17 | 255/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.71 (830.8) | 33.06 (839.8) | 0.35 (9) 1.1% |
| Width inches (mm) | 11.22 (285) | 10.04 (255) | -1.18 (-30) -10.5% |
| Circum. inches (mm) | 102.76 (2610.04) | 103.87 (2638.31) | 1.11 (28.27) 1.1% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 8.03 (204) | 0.18 (4.5) 2.3% |
| Revolutions per mile (km) | 616.6 (383.14) | 609.99 (379.03) | -6.61 (-4.11) -1.1% |
255/80-17 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) | 30.32 mph (48.8 km/h) |
| 35 mph (56.33 km/h) | 35.38 mph (56.94 km/h) |
| 40 mph (64.37 km/h) | 40.43 mph (65.07 km/h) |
| 45 mph (72.42 km/h) | 45.49 mph (73.21 km/h) |
| 50 mph (80.47 km/h) | 50.54 mph (81.34 km/h) |
| 55 mph (88.51 km/h) | 55.6 mph (89.47 km/h) |
| 60 mph (96.56 km/h) | 60.65 mph (97.61 km/h) |
| 65 mph (104.61 km/h) | 65.7 mph (105.74 km/h) |
| 70 mph (112.65 km/h) | 70.76 mph (113.87 km/h) |
| 75 mph (120.7 km/h) | 75.81 mph (122.01 km/h) |
| 80 mph (128.75 km/h) | 80.87 mph (130.14 km/h) |
| 85 mph (136.79 km/h) | 85.92 mph (138.28 km/h) |
| 90 mph (144.84 km/h) | 90.97 mph (146.41 km/h) |
| 95 mph (152.89 km/h) | 96.03 mph (154.54 km/h) |
| 100 mph (160.93 km/h) | 101.08 mph (162.68 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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