Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-17 | 185/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.39 (695.8) | 28.65 (727.8) | 1.26 (32) 4.6% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 86.06 (2185.92) | 90.02 (2286.45) | 3.96 (100.53) 4.6% |
| Sidewall Height inches (mm) | 5.2 (132) | 5.83 (148) | 0.63 (16) 12.1% |
| Revolutions per mile (km) | 736.23 (457.47) | 703.86 (437.36) | -32.37 (-20.11) -4.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.92 mph (33.67 km/h) |
| 25 mph (40.23 km/h) | 26.15 mph (42.08 km/h) |
| 30 mph (48.28 km/h) | 31.38 mph (50.5 km/h) |
| 35 mph (56.33 km/h) | 36.61 mph (58.92 km/h) |
| 40 mph (64.37 km/h) | 41.84 mph (67.33 km/h) |
| 45 mph (72.42 km/h) | 47.07 mph (75.75 km/h) |
| 50 mph (80.47 km/h) | 52.3 mph (84.17 km/h) |
| 55 mph (88.51 km/h) | 57.53 mph (92.58 km/h) |
| 60 mph (96.56 km/h) | 62.76 mph (101 km/h) |
| 65 mph (104.61 km/h) | 67.99 mph (109.42 km/h) |
| 70 mph (112.65 km/h) | 73.22 mph (117.84 km/h) |
| 75 mph (120.7 km/h) | 78.45 mph (126.25 km/h) |
| 80 mph (128.75 km/h) | 83.68 mph (134.67 km/h) |
| 85 mph (136.79 km/h) | 88.91 mph (143.09 km/h) |
| 90 mph (144.84 km/h) | 94.14 mph (151.5 km/h) |
| 95 mph (152.89 km/h) | 99.37 mph (159.92 km/h) |
| 100 mph (160.93 km/h) | 104.6 mph (168.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1791 | 2081 | 2241 | 2340 | 2447 | 2523 | 2607 | 2706 | 2843 | 2980 | 3133 | 3255 | 3476 | 3720 | 3910 | 4032 | 4101 | 4352 | 4703 | 5465 |
Better Fuel Economy Factory Ratios Increased Power
