Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 190/85-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 26.72 (678.6) | 1.38 (35) 5.4% |
| Width inches (mm) | 7.09 (180) | 7.48 (190) | 0.39 (10) 5.6% |
| Circum. inches (mm) | 79.6 (2021.93) | 83.93 (2131.88) | 4.33 (109.96) 5.4% |
| Sidewall Height inches (mm) | 5.67 (144) | 6.36 (161.5) | 0.69 (17.5) 12.2% |
| Revolutions per mile (km) | 795.94 (494.58) | 754.89 (469.07) | -41.05 (-25.51) -5.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.09 mph (33.94 km/h) |
| 25 mph (40.23 km/h) | 26.36 mph (42.42 km/h) |
| 30 mph (48.28 km/h) | 31.63 mph (50.91 km/h) |
| 35 mph (56.33 km/h) | 36.9 mph (59.39 km/h) |
| 40 mph (64.37 km/h) | 42.18 mph (67.87 km/h) |
| 45 mph (72.42 km/h) | 47.45 mph (76.36 km/h) |
| 50 mph (80.47 km/h) | 52.72 mph (84.84 km/h) |
| 55 mph (88.51 km/h) | 57.99 mph (93.33 km/h) |
| 60 mph (96.56 km/h) | 63.26 mph (101.81 km/h) |
| 65 mph (104.61 km/h) | 68.53 mph (110.3 km/h) |
| 70 mph (112.65 km/h) | 73.81 mph (118.78 km/h) |
| 75 mph (120.7 km/h) | 79.08 mph (127.26 km/h) |
| 80 mph (128.75 km/h) | 84.35 mph (135.75 km/h) |
| 85 mph (136.79 km/h) | 89.62 mph (144.23 km/h) |
| 90 mph (144.84 km/h) | 94.89 mph (152.72 km/h) |
| 95 mph (152.89 km/h) | 100.17 mph (161.2 km/h) |
| 100 mph (160.93 km/h) | 105.44 mph (169.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1921 | 2232 | 2403 | 2510 | 2624 | 2706 | 2796 | 2902 | 3049 | 3196 | 3360 | 3491 | 3728 | 3989 | 4194 | 4324 | 4398 | 4668 | 5044 | 5861 |
Better Fuel Economy Factory Ratios Increased Power
