Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-15 | 165/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.93 (658.5) | 25.39 (645) | -0.53 (-13.5) -2.1% |
| Width inches (mm) | 7.28 (185) | 6.5 (165) | -0.79 (-20) -10.8% |
| Circum. inches (mm) | 81.45 (2068.74) | 79.78 (2026.33) | -1.67 (-42.41) -2.1% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 5.2 (132) | -0.27 (-6.75) -4.9% |
| Revolutions per mile (km) | 777.93 (483.39) | 794.22 (493.5) | 16.28 (10.12) 2.1% |
165/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.59 mph (31.53 km/h) |
| 25 mph (40.23 km/h) | 24.49 mph (39.41 km/h) |
| 30 mph (48.28 km/h) | 29.38 mph (47.29 km/h) |
| 35 mph (56.33 km/h) | 34.28 mph (55.17 km/h) |
| 40 mph (64.37 km/h) | 39.18 mph (63.05 km/h) |
| 45 mph (72.42 km/h) | 44.08 mph (70.94 km/h) |
| 50 mph (80.47 km/h) | 48.97 mph (78.82 km/h) |
| 55 mph (88.51 km/h) | 53.87 mph (86.7 km/h) |
| 60 mph (96.56 km/h) | 58.77 mph (94.58 km/h) |
| 65 mph (104.61 km/h) | 63.67 mph (102.46 km/h) |
| 70 mph (112.65 km/h) | 68.56 mph (110.34 km/h) |
| 75 mph (120.7 km/h) | 73.46 mph (118.23 km/h) |
| 80 mph (128.75 km/h) | 78.36 mph (126.11 km/h) |
| 85 mph (136.79 km/h) | 83.26 mph (133.99 km/h) |
| 90 mph (144.84 km/h) | 88.15 mph (141.87 km/h) |
| 95 mph (152.89 km/h) | 93.05 mph (149.75 km/h) |
| 100 mph (160.93 km/h) | 97.95 mph (157.64 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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