Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 180/85-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 26.05 (661.6) | 0.71 (18) 2.8% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 79.6 (2021.93) | 81.83 (2078.48) | 2.23 (56.55) 2.8% |
| Sidewall Height inches (mm) | 5.67 (144) | 6.02 (153) | 0.35 (9) 6.2% |
| Revolutions per mile (km) | 795.94 (494.58) | 774.29 (481.12) | -21.66 (-13.46) -2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.56 mph (33.09 km/h) |
| 25 mph (40.23 km/h) | 25.7 mph (41.36 km/h) |
| 30 mph (48.28 km/h) | 30.84 mph (49.63 km/h) |
| 35 mph (56.33 km/h) | 35.98 mph (57.9 km/h) |
| 40 mph (64.37 km/h) | 41.12 mph (66.17 km/h) |
| 45 mph (72.42 km/h) | 46.26 mph (74.45 km/h) |
| 50 mph (80.47 km/h) | 51.4 mph (82.72 km/h) |
| 55 mph (88.51 km/h) | 56.54 mph (90.99 km/h) |
| 60 mph (96.56 km/h) | 61.68 mph (99.26 km/h) |
| 65 mph (104.61 km/h) | 66.82 mph (107.53 km/h) |
| 70 mph (112.65 km/h) | 71.96 mph (115.8 km/h) |
| 75 mph (120.7 km/h) | 77.1 mph (124.08 km/h) |
| 80 mph (128.75 km/h) | 82.24 mph (132.35 km/h) |
| 85 mph (136.79 km/h) | 87.38 mph (140.62 km/h) |
| 90 mph (144.84 km/h) | 92.52 mph (148.89 km/h) |
| 95 mph (152.89 km/h) | 97.66 mph (157.16 km/h) |
| 100 mph (160.93 km/h) | 102.8 mph (165.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1970 | 2289 | 2465 | 2574 | 2692 | 2775 | 2868 | 2977 | 3128 | 3278 | 3446 | 3580 | 3823 | 4092 | 4301 | 4436 | 4511 | 4788 | 5173 | 6012 |
Better Fuel Economy Factory Ratios Increased Power
