Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/80-17 | 255/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.8 (807.8) | 33.06 (839.8) | 1.26 (32) 4% |
| Width inches (mm) | 9.25 (235) | 10.04 (255) | 0.79 (20) 8.5% |
| Circum. inches (mm) | 99.91 (2537.78) | 103.87 (2638.31) | 3.96 (100.53) 4% |
| Sidewall Height inches (mm) | 7.4 (188) | 8.03 (204) | 0.63 (16) 8.5% |
| Revolutions per mile (km) | 634.15 (394.04) | 609.99 (379.03) | -24.16 (-15.01) -3.8% |
255/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.79 mph (33.46 km/h) |
| 25 mph (40.23 km/h) | 25.99 mph (41.83 km/h) |
| 30 mph (48.28 km/h) | 31.19 mph (50.19 km/h) |
| 35 mph (56.33 km/h) | 36.39 mph (58.56 km/h) |
| 40 mph (64.37 km/h) | 41.58 mph (66.92 km/h) |
| 45 mph (72.42 km/h) | 46.78 mph (75.29 km/h) |
| 50 mph (80.47 km/h) | 51.98 mph (83.65 km/h) |
| 55 mph (88.51 km/h) | 57.18 mph (92.02 km/h) |
| 60 mph (96.56 km/h) | 62.38 mph (100.39 km/h) |
| 65 mph (104.61 km/h) | 67.57 mph (108.75 km/h) |
| 70 mph (112.65 km/h) | 72.77 mph (117.12 km/h) |
| 75 mph (120.7 km/h) | 77.97 mph (125.48 km/h) |
| 80 mph (128.75 km/h) | 83.17 mph (133.85 km/h) |
| 85 mph (136.79 km/h) | 88.37 mph (142.21 km/h) |
| 90 mph (144.84 km/h) | 93.57 mph (150.58 km/h) |
| 95 mph (152.89 km/h) | 98.76 mph (158.94 km/h) |
| 100 mph (160.93 km/h) | 103.96 mph (167.31 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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