Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-15 | 175/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.39 (645) | 26.02 (661) | 0.63 (16) 2.5% |
| Width inches (mm) | 6.5 (165) | 6.89 (175) | 0.39 (10) 6.1% |
| Circum. inches (mm) | 79.78 (2026.33) | 81.76 (2076.59) | 1.98 (50.27) 2.5% |
| Sidewall Height inches (mm) | 5.2 (132) | 5.51 (140) | 0.31 (8) 6.1% |
| Revolutions per mile (km) | 794.22 (493.5) | 774.99 (481.56) | -19.22 (-11.95) -2.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.5 mph (32.99 km/h) |
| 25 mph (40.23 km/h) | 25.62 mph (41.23 km/h) |
| 30 mph (48.28 km/h) | 30.74 mph (49.48 km/h) |
| 35 mph (56.33 km/h) | 35.87 mph (57.72 km/h) |
| 40 mph (64.37 km/h) | 40.99 mph (65.97 km/h) |
| 45 mph (72.42 km/h) | 46.12 mph (74.22 km/h) |
| 50 mph (80.47 km/h) | 51.24 mph (82.46 km/h) |
| 55 mph (88.51 km/h) | 56.36 mph (90.71 km/h) |
| 60 mph (96.56 km/h) | 61.49 mph (98.96 km/h) |
| 65 mph (104.61 km/h) | 66.61 mph (107.2 km/h) |
| 70 mph (112.65 km/h) | 71.74 mph (115.45 km/h) |
| 75 mph (120.7 km/h) | 76.86 mph (123.7 km/h) |
| 80 mph (128.75 km/h) | 81.98 mph (131.94 km/h) |
| 85 mph (136.79 km/h) | 87.11 mph (140.19 km/h) |
| 90 mph (144.84 km/h) | 92.23 mph (148.43 km/h) |
| 95 mph (152.89 km/h) | 97.36 mph (156.68 km/h) |
| 100 mph (160.93 km/h) | 102.48 mph (164.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1972 | 2291 | 2467 | 2576 | 2694 | 2778 | 2870 | 2979 | 3130 | 3281 | 3449 | 3584 | 3827 | 4095 | 4305 | 4440 | 4515 | 4792 | 5178 | 6017 |
Better Fuel Economy Factory Ratios Increased Power
