Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-15 | 165/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.13 (613) | 25.39 (645) | 1.26 (32) 5.2% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 75.82 (1925.8) | 79.78 (2026.33) | 3.96 (100.53) 5.2% |
| Sidewall Height inches (mm) | 4.57 (116) | 5.2 (132) | 0.63 (16) 13.8% |
| Revolutions per mile (km) | 835.68 (519.26) | 794.22 (493.5) | -41.46 (-25.76) -5% |
165/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.04 mph (33.87 km/h) |
| 25 mph (40.23 km/h) | 26.31 mph (42.33 km/h) |
| 30 mph (48.28 km/h) | 31.57 mph (50.8 km/h) |
| 35 mph (56.33 km/h) | 36.83 mph (59.27 km/h) |
| 40 mph (64.37 km/h) | 42.09 mph (67.73 km/h) |
| 45 mph (72.42 km/h) | 47.35 mph (76.2 km/h) |
| 50 mph (80.47 km/h) | 52.61 mph (84.67 km/h) |
| 55 mph (88.51 km/h) | 57.87 mph (93.13 km/h) |
| 60 mph (96.56 km/h) | 63.13 mph (101.6 km/h) |
| 65 mph (104.61 km/h) | 68.39 mph (110.07 km/h) |
| 70 mph (112.65 km/h) | 73.65 mph (118.54 km/h) |
| 75 mph (120.7 km/h) | 78.92 mph (127 km/h) |
| 80 mph (128.75 km/h) | 84.18 mph (135.47 km/h) |
| 85 mph (136.79 km/h) | 89.44 mph (143.94 km/h) |
| 90 mph (144.84 km/h) | 94.7 mph (152.4 km/h) |
| 95 mph (152.89 km/h) | 99.96 mph (160.87 km/h) |
| 100 mph (160.93 km/h) | 105.22 mph (169.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 2348 | 2529 | 2640 | 2761 | 2847 | 2941 | 3053 | 3208 | 3363 | 3535 | 3672 | 3922 | 4197 | 4412 | 4550 | 4627 | 4911 | 5307 | 6167 |
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