Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/70-17 | 255/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.36 (872.8) | 33.06 (839.8) | -1.3 (-33) -3.8% |
| Width inches (mm) | 12.4 (315) | 10.04 (255) | -2.36 (-60) -19% |
| Circum. inches (mm) | 107.95 (2741.98) | 103.87 (2638.31) | -4.08 (-103.67) -3.8% |
| Sidewall Height inches (mm) | 8.68 (220.5) | 8.03 (204) | -0.65 (-16.5) -7.5% |
| Revolutions per mile (km) | 586.93 (364.7) | 609.99 (379.03) | 23.06 (14.33) 3.9% |
255/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.24 mph (30.97 km/h) |
| 25 mph (40.23 km/h) | 24.05 mph (38.71 km/h) |
| 30 mph (48.28 km/h) | 28.87 mph (46.45 km/h) |
| 35 mph (56.33 km/h) | 33.68 mph (54.2 km/h) |
| 40 mph (64.37 km/h) | 38.49 mph (61.94 km/h) |
| 45 mph (72.42 km/h) | 43.3 mph (69.68 km/h) |
| 50 mph (80.47 km/h) | 48.11 mph (77.42 km/h) |
| 55 mph (88.51 km/h) | 52.92 mph (85.17 km/h) |
| 60 mph (96.56 km/h) | 57.73 mph (92.91 km/h) |
| 65 mph (104.61 km/h) | 62.54 mph (100.65 km/h) |
| 70 mph (112.65 km/h) | 67.35 mph (108.39 km/h) |
| 75 mph (120.7 km/h) | 72.16 mph (116.14 km/h) |
| 80 mph (128.75 km/h) | 76.98 mph (123.88 km/h) |
| 85 mph (136.79 km/h) | 81.79 mph (131.62 km/h) |
| 90 mph (144.84 km/h) | 86.6 mph (139.36 km/h) |
| 95 mph (152.89 km/h) | 91.41 mph (147.11 km/h) |
| 100 mph (160.93 km/h) | 96.22 mph (154.85 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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