Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/80-15 | 165/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.71 (653) | 25.39 (645) | -0.31 (-8) -1.2% |
| Width inches (mm) | 6.69 (170) | 6.5 (165) | -0.2 (-5) -2.9% |
| Circum. inches (mm) | 80.77 (2051.46) | 79.78 (2026.33) | -0.99 (-25.13) -1.2% |
| Sidewall Height inches (mm) | 5.35 (136) | 5.2 (132) | -0.16 (-4) -2.9% |
| Revolutions per mile (km) | 784.49 (487.46) | 794.22 (493.5) | 9.73 (6.05) 1.2% |
165/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.75 mph (31.79 km/h) |
| 25 mph (40.23 km/h) | 24.69 mph (39.74 km/h) |
| 30 mph (48.28 km/h) | 29.63 mph (47.69 km/h) |
| 35 mph (56.33 km/h) | 34.57 mph (55.64 km/h) |
| 40 mph (64.37 km/h) | 39.51 mph (63.59 km/h) |
| 45 mph (72.42 km/h) | 44.45 mph (71.53 km/h) |
| 50 mph (80.47 km/h) | 49.39 mph (79.48 km/h) |
| 55 mph (88.51 km/h) | 54.33 mph (87.43 km/h) |
| 60 mph (96.56 km/h) | 59.26 mph (95.38 km/h) |
| 65 mph (104.61 km/h) | 64.2 mph (103.33 km/h) |
| 70 mph (112.65 km/h) | 69.14 mph (111.27 km/h) |
| 75 mph (120.7 km/h) | 74.08 mph (119.22 km/h) |
| 80 mph (128.75 km/h) | 79.02 mph (127.17 km/h) |
| 85 mph (136.79 km/h) | 83.96 mph (135.12 km/h) |
| 90 mph (144.84 km/h) | 88.9 mph (143.07 km/h) |
| 95 mph (152.89 km/h) | 93.84 mph (151.01 km/h) |
| 100 mph (160.93 km/h) | 98.77 mph (158.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 2348 | 2529 | 2640 | 2761 | 2847 | 2941 | 3053 | 3208 | 3363 | 3535 | 3672 | 3922 | 4197 | 4412 | 4550 | 4627 | 4911 | 5307 | 6167 |
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