Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 165/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 27.39 (695.8) | -3.01 (-76.4) -9.9% |
| Width inches (mm) | 6.89 (175) | 6.5 (165) | -0.39 (-10) -5.7% |
| Circum. inches (mm) | 95.51 (2425.94) | 86.06 (2185.92) | -9.45 (-240.02) -9.9% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 5.2 (132) | -1 (-25.5) -16.2% |
| Revolutions per mile (km) | 663.39 (412.21) | 736.23 (457.47) | 72.84 (45.26) 11% |
165/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.02 mph (29 km/h) |
| 25 mph (40.23 km/h) | 22.53 mph (36.25 km/h) |
| 30 mph (48.28 km/h) | 27.03 mph (43.5 km/h) |
| 35 mph (56.33 km/h) | 31.54 mph (50.75 km/h) |
| 40 mph (64.37 km/h) | 36.04 mph (58 km/h) |
| 45 mph (72.42 km/h) | 40.55 mph (65.26 km/h) |
| 50 mph (80.47 km/h) | 45.05 mph (72.51 km/h) |
| 55 mph (88.51 km/h) | 49.56 mph (79.76 km/h) |
| 60 mph (96.56 km/h) | 54.06 mph (87.01 km/h) |
| 65 mph (104.61 km/h) | 58.57 mph (94.26 km/h) |
| 70 mph (112.65 km/h) | 63.07 mph (101.51 km/h) |
| 75 mph (120.7 km/h) | 67.58 mph (108.76 km/h) |
| 80 mph (128.75 km/h) | 72.08 mph (116.01 km/h) |
| 85 mph (136.79 km/h) | 76.59 mph (123.26 km/h) |
| 90 mph (144.84 km/h) | 81.1 mph (130.51 km/h) |
| 95 mph (152.89 km/h) | 85.6 mph (137.76 km/h) |
| 100 mph (160.93 km/h) | 90.11 mph (145.01 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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