Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/85-18 | 165/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.37 (720.7) | 27.39 (695.8) | -0.98 (-24.9) -3.5% |
| Width inches (mm) | 6.1 (155) | 6.5 (165) | 0.39 (10) 6.5% |
| Circum. inches (mm) | 89.14 (2264.15) | 86.06 (2185.92) | -3.08 (-78.23) -3.5% |
| Sidewall Height inches (mm) | 5.19 (131.75) | 5.2 (132) | 0.01 (0.25) 0.2% |
| Revolutions per mile (km) | 710.8 (441.67) | 736.23 (457.47) | 25.44 (15.81) 3.6% |
165/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.31 mph (31.07 km/h) |
| 25 mph (40.23 km/h) | 24.14 mph (38.84 km/h) |
| 30 mph (48.28 km/h) | 28.96 mph (46.61 km/h) |
| 35 mph (56.33 km/h) | 33.79 mph (54.38 km/h) |
| 40 mph (64.37 km/h) | 38.62 mph (62.15 km/h) |
| 45 mph (72.42 km/h) | 43.45 mph (69.92 km/h) |
| 50 mph (80.47 km/h) | 48.27 mph (77.69 km/h) |
| 55 mph (88.51 km/h) | 53.1 mph (85.46 km/h) |
| 60 mph (96.56 km/h) | 57.93 mph (93.22 km/h) |
| 65 mph (104.61 km/h) | 62.75 mph (100.99 km/h) |
| 70 mph (112.65 km/h) | 67.58 mph (108.76 km/h) |
| 75 mph (120.7 km/h) | 72.41 mph (116.53 km/h) |
| 80 mph (128.75 km/h) | 77.24 mph (124.3 km/h) |
| 85 mph (136.79 km/h) | 82.06 mph (132.07 km/h) |
| 90 mph (144.84 km/h) | 86.89 mph (139.84 km/h) |
| 95 mph (152.89 km/h) | 91.72 mph (147.61 km/h) |
| 100 mph (160.93 km/h) | 96.55 mph (155.37 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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