Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-15 | 165/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.42 (569.5) | 25.39 (645) | 2.97 (75.5) 13.3% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 70.44 (1789.14) | 79.78 (2026.33) | 9.34 (237.19) 13.3% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 5.2 (132) | 1.49 (37.75) 40.1% |
| Revolutions per mile (km) | 899.51 (558.93) | 794.22 (493.5) | -105.29 (-65.42) -11.7% |
165/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.65 mph (36.45 km/h) |
| 25 mph (40.23 km/h) | 28.31 mph (45.57 km/h) |
| 30 mph (48.28 km/h) | 33.98 mph (54.68 km/h) |
| 35 mph (56.33 km/h) | 39.64 mph (63.79 km/h) |
| 40 mph (64.37 km/h) | 45.3 mph (72.91 km/h) |
| 45 mph (72.42 km/h) | 50.97 mph (82.02 km/h) |
| 50 mph (80.47 km/h) | 56.63 mph (91.14 km/h) |
| 55 mph (88.51 km/h) | 62.29 mph (100.25 km/h) |
| 60 mph (96.56 km/h) | 67.95 mph (109.36 km/h) |
| 65 mph (104.61 km/h) | 73.62 mph (118.48 km/h) |
| 70 mph (112.65 km/h) | 79.28 mph (127.59 km/h) |
| 75 mph (120.7 km/h) | 84.94 mph (136.7 km/h) |
| 80 mph (128.75 km/h) | 90.61 mph (145.82 km/h) |
| 85 mph (136.79 km/h) | 96.27 mph (154.93 km/h) |
| 90 mph (144.84 km/h) | 101.93 mph (164.04 km/h) |
| 95 mph (152.89 km/h) | 107.59 mph (173.16 km/h) |
| 100 mph (160.93 km/h) | 113.26 mph (182.27 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 |
Better Fuel Economy Factory Ratios Increased Power
