Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-15 | 165/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.5 (597) | 25.39 (645) | 1.89 (48) 8% |
| Width inches (mm) | 5.31 (135) | 6.5 (165) | 1.18 (30) 22.2% |
| Circum. inches (mm) | 73.84 (1875.53) | 79.78 (2026.33) | 5.94 (150.8) 8% |
| Sidewall Height inches (mm) | 4.25 (108) | 5.2 (132) | 0.94 (24) 22.2% |
| Revolutions per mile (km) | 858.07 (533.18) | 794.22 (493.5) | -63.86 (-39.68) -7.4% |
165/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.61 mph (34.77 km/h) |
| 25 mph (40.23 km/h) | 27.01 mph (43.47 km/h) |
| 30 mph (48.28 km/h) | 32.41 mph (52.16 km/h) |
| 35 mph (56.33 km/h) | 37.81 mph (60.86 km/h) |
| 40 mph (64.37 km/h) | 43.22 mph (69.55 km/h) |
| 45 mph (72.42 km/h) | 48.62 mph (78.24 km/h) |
| 50 mph (80.47 km/h) | 54.02 mph (86.94 km/h) |
| 55 mph (88.51 km/h) | 59.42 mph (95.63 km/h) |
| 60 mph (96.56 km/h) | 64.82 mph (104.32 km/h) |
| 65 mph (104.61 km/h) | 70.23 mph (113.02 km/h) |
| 70 mph (112.65 km/h) | 75.63 mph (121.71 km/h) |
| 75 mph (120.7 km/h) | 81.03 mph (130.41 km/h) |
| 80 mph (128.75 km/h) | 86.43 mph (139.1 km/h) |
| 85 mph (136.79 km/h) | 91.83 mph (147.79 km/h) |
| 90 mph (144.84 km/h) | 97.24 mph (156.49 km/h) |
| 95 mph (152.89 km/h) | 102.64 mph (165.18 km/h) |
| 100 mph (160.93 km/h) | 108.04 mph (173.87 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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