Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/90-18 | 165/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.98 (736.2) | 27.39 (695.8) | -1.59 (-40.4) -5.5% |
| Width inches (mm) | 6.1 (155) | 6.5 (165) | 0.39 (10) 6.5% |
| Circum. inches (mm) | 91.06 (2312.84) | 86.06 (2185.92) | -5 (-126.92) -5.5% |
| Sidewall Height inches (mm) | 5.49 (139.5) | 5.2 (132) | -0.3 (-7.5) -5.4% |
| Revolutions per mile (km) | 695.83 (432.37) | 736.23 (457.47) | 40.4 (25.1) 5.8% |
165/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.9 mph (30.42 km/h) |
| 25 mph (40.23 km/h) | 23.63 mph (38.03 km/h) |
| 30 mph (48.28 km/h) | 28.35 mph (45.63 km/h) |
| 35 mph (56.33 km/h) | 33.08 mph (53.24 km/h) |
| 40 mph (64.37 km/h) | 37.8 mph (60.84 km/h) |
| 45 mph (72.42 km/h) | 42.53 mph (68.45 km/h) |
| 50 mph (80.47 km/h) | 47.26 mph (76.05 km/h) |
| 55 mph (88.51 km/h) | 51.98 mph (83.66 km/h) |
| 60 mph (96.56 km/h) | 56.71 mph (91.26 km/h) |
| 65 mph (104.61 km/h) | 61.43 mph (98.87 km/h) |
| 70 mph (112.65 km/h) | 66.16 mph (106.47 km/h) |
| 75 mph (120.7 km/h) | 70.88 mph (114.08 km/h) |
| 80 mph (128.75 km/h) | 75.61 mph (121.68 km/h) |
| 85 mph (136.79 km/h) | 80.34 mph (129.29 km/h) |
| 90 mph (144.84 km/h) | 85.06 mph (136.89 km/h) |
| 95 mph (152.89 km/h) | 89.79 mph (144.5 km/h) |
| 100 mph (160.93 km/h) | 94.51 mph (152.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1874 | 2177 | 2344 | 2448 | 2559 | 2639 | 2727 | 2830 | 2974 | 3117 | 3277 | 3404 | 3636 | 3891 | 4090 | 4218 | 4289 | 4552 | 4919 | 5716 |
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