Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 180/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 23.34 (592.8) | -2 (-50.8) -7.9% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 79.6 (2021.93) | 73.32 (1862.34) | -6.28 (-159.59) -7.9% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.67 (144) | 0 (0) 0% |
| Revolutions per mile (km) | 795.94 (494.58) | 864.15 (536.96) | 68.21 (42.38) 8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.42 mph (29.65 km/h) |
| 25 mph (40.23 km/h) | 23.03 mph (37.06 km/h) |
| 30 mph (48.28 km/h) | 27.63 mph (44.47 km/h) |
| 35 mph (56.33 km/h) | 32.24 mph (51.88 km/h) |
| 40 mph (64.37 km/h) | 36.84 mph (59.29 km/h) |
| 45 mph (72.42 km/h) | 41.45 mph (66.7 km/h) |
| 50 mph (80.47 km/h) | 46.05 mph (74.12 km/h) |
| 55 mph (88.51 km/h) | 50.66 mph (81.53 km/h) |
| 60 mph (96.56 km/h) | 55.26 mph (88.94 km/h) |
| 65 mph (104.61 km/h) | 59.87 mph (96.35 km/h) |
| 70 mph (112.65 km/h) | 64.47 mph (103.76 km/h) |
| 75 mph (120.7 km/h) | 69.08 mph (111.17 km/h) |
| 80 mph (128.75 km/h) | 73.69 mph (118.59 km/h) |
| 85 mph (136.79 km/h) | 78.29 mph (126 km/h) |
| 90 mph (144.84 km/h) | 82.9 mph (133.41 km/h) |
| 95 mph (152.89 km/h) | 87.5 mph (140.82 km/h) |
| 100 mph (160.93 km/h) | 92.11 mph (148.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2199 | 2555 | 2751 | 2873 | 3004 | 3097 | 3200 | 3322 | 3490 | 3659 | 3846 | 3996 | 4267 | 4567 | 4801 | 4950 | 5035 | 5343 | 5774 | 6710 |
Better Fuel Economy Factory Ratios Increased Power
