Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/70-17 | 255/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.06 (788.8) | 33.06 (839.8) | 2.01 (51) 6.5% |
| Width inches (mm) | 10.04 (255) | 10.04 (255) | 0 (0) 0% |
| Circum. inches (mm) | 97.56 (2478.09) | 103.87 (2638.31) | 6.31 (160.22) 6.5% |
| Sidewall Height inches (mm) | 7.03 (178.5) | 8.03 (204) | 1 (25.5) 14.3% |
| Revolutions per mile (km) | 649.43 (403.54) | 609.99 (379.03) | -39.44 (-24.51) -6.1% |
255/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.29 mph (34.27 km/h) |
| 25 mph (40.23 km/h) | 26.62 mph (42.83 km/h) |
| 30 mph (48.28 km/h) | 31.94 mph (51.4 km/h) |
| 35 mph (56.33 km/h) | 37.26 mph (59.97 km/h) |
| 40 mph (64.37 km/h) | 42.59 mph (68.54 km/h) |
| 45 mph (72.42 km/h) | 47.91 mph (77.1 km/h) |
| 50 mph (80.47 km/h) | 53.23 mph (85.67 km/h) |
| 55 mph (88.51 km/h) | 58.56 mph (94.24 km/h) |
| 60 mph (96.56 km/h) | 63.88 mph (102.8 km/h) |
| 65 mph (104.61 km/h) | 69.2 mph (111.37 km/h) |
| 70 mph (112.65 km/h) | 74.53 mph (119.94 km/h) |
| 75 mph (120.7 km/h) | 79.85 mph (128.5 km/h) |
| 80 mph (128.75 km/h) | 85.17 mph (137.07 km/h) |
| 85 mph (136.79 km/h) | 90.5 mph (145.64 km/h) |
| 90 mph (144.84 km/h) | 95.82 mph (154.21 km/h) |
| 95 mph (152.89 km/h) | 101.14 mph (162.77 km/h) |
| 100 mph (160.93 km/h) | 106.47 mph (171.34 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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