Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/82-14 | 178/90-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.94 (659) | 26.61 (676) | 0.67 (17) 2.6% |
| Width inches (mm) | 7.28 (185) | 7.01 (178) | -0.28 (-7) -3.8% |
| Circum. inches (mm) | 81.51 (2070.31) | 83.61 (2123.72) | 2.1 (53.41) 2.6% |
| Sidewall Height inches (mm) | 5.97 (151.7) | 6.31 (160.2) | 0.33 (8.5) 5.6% |
| Revolutions per mile (km) | 777.34 (483.02) | 757.8 (470.87) | -19.55 (-12.15) -2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.52 mph (33.02 km/h) |
| 25 mph (40.23 km/h) | 25.64 mph (41.27 km/h) |
| 30 mph (48.28 km/h) | 30.77 mph (49.53 km/h) |
| 35 mph (56.33 km/h) | 35.9 mph (57.78 km/h) |
| 40 mph (64.37 km/h) | 41.03 mph (66.03 km/h) |
| 45 mph (72.42 km/h) | 46.16 mph (74.29 km/h) |
| 50 mph (80.47 km/h) | 51.29 mph (82.54 km/h) |
| 55 mph (88.51 km/h) | 56.42 mph (90.8 km/h) |
| 60 mph (96.56 km/h) | 61.55 mph (99.05 km/h) |
| 65 mph (104.61 km/h) | 66.68 mph (107.31 km/h) |
| 70 mph (112.65 km/h) | 71.81 mph (115.56 km/h) |
| 75 mph (120.7 km/h) | 76.93 mph (123.81 km/h) |
| 80 mph (128.75 km/h) | 82.06 mph (132.07 km/h) |
| 85 mph (136.79 km/h) | 87.19 mph (140.32 km/h) |
| 90 mph (144.84 km/h) | 92.32 mph (148.58 km/h) |
| 95 mph (152.89 km/h) | 97.45 mph (156.83 km/h) |
| 100 mph (160.93 km/h) | 102.58 mph (165.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1928 | 2240 | 2413 | 2519 | 2634 | 2716 | 2807 | 2913 | 3061 | 3209 | 3373 | 3504 | 3742 | 4005 | 4210 | 4341 | 4415 | 4686 | 5063 | 5884 |
Better Fuel Economy Factory Ratios Increased Power
