Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 185/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 26.65 (677) | 1 (25.4) 3.9% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 80.59 (2047.06) | 83.73 (2126.86) | 3.14 (79.8) 3.9% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 5.83 (148) | 0.5 (12.7) 9.4% |
| Revolutions per mile (km) | 786.17 (488.5) | 756.68 (470.18) | -29.5 (-18.33) -3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.78 mph (33.44 km/h) |
| 25 mph (40.23 km/h) | 25.97 mph (41.8 km/h) |
| 30 mph (48.28 km/h) | 31.17 mph (50.16 km/h) |
| 35 mph (56.33 km/h) | 36.36 mph (58.52 km/h) |
| 40 mph (64.37 km/h) | 41.56 mph (66.88 km/h) |
| 45 mph (72.42 km/h) | 46.75 mph (75.24 km/h) |
| 50 mph (80.47 km/h) | 51.95 mph (83.6 km/h) |
| 55 mph (88.51 km/h) | 57.14 mph (91.96 km/h) |
| 60 mph (96.56 km/h) | 62.34 mph (100.32 km/h) |
| 65 mph (104.61 km/h) | 67.53 mph (108.69 km/h) |
| 70 mph (112.65 km/h) | 72.73 mph (117.05 km/h) |
| 75 mph (120.7 km/h) | 77.92 mph (125.41 km/h) |
| 80 mph (128.75 km/h) | 83.12 mph (133.77 km/h) |
| 85 mph (136.79 km/h) | 88.31 mph (142.13 km/h) |
| 90 mph (144.84 km/h) | 93.51 mph (150.49 km/h) |
| 95 mph (152.89 km/h) | 98.7 mph (158.85 km/h) |
| 100 mph (160.93 km/h) | 103.9 mph (167.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1926 | 2237 | 2409 | 2516 | 2630 | 2712 | 2802 | 2909 | 3056 | 3204 | 3368 | 3499 | 3736 | 3999 | 4204 | 4335 | 4408 | 4679 | 5056 | 5875 |
Better Fuel Economy Factory Ratios Increased Power
