Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 165/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 27.39 (695.8) | 1.95 (49.6) 7.7% |
| Width inches (mm) | 5.31 (135) | 6.5 (165) | 1.18 (30) 22.2% |
| Circum. inches (mm) | 79.93 (2030.1) | 86.06 (2185.92) | 6.13 (155.82) 7.7% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 5.2 (132) | 1.48 (37.5) 39.7% |
| Revolutions per mile (km) | 792.74 (492.59) | 736.23 (457.47) | -56.51 (-35.11) -7.1% |
165/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.54 mph (34.66 km/h) |
| 25 mph (40.23 km/h) | 26.92 mph (43.32 km/h) |
| 30 mph (48.28 km/h) | 32.3 mph (51.99 km/h) |
| 35 mph (56.33 km/h) | 37.69 mph (60.65 km/h) |
| 40 mph (64.37 km/h) | 43.07 mph (69.31 km/h) |
| 45 mph (72.42 km/h) | 48.45 mph (77.98 km/h) |
| 50 mph (80.47 km/h) | 53.84 mph (86.64 km/h) |
| 55 mph (88.51 km/h) | 59.22 mph (95.31 km/h) |
| 60 mph (96.56 km/h) | 64.61 mph (103.97 km/h) |
| 65 mph (104.61 km/h) | 69.99 mph (112.64 km/h) |
| 70 mph (112.65 km/h) | 75.37 mph (121.3 km/h) |
| 75 mph (120.7 km/h) | 80.76 mph (129.97 km/h) |
| 80 mph (128.75 km/h) | 86.14 mph (138.63 km/h) |
| 85 mph (136.79 km/h) | 91.52 mph (147.29 km/h) |
| 90 mph (144.84 km/h) | 96.91 mph (155.96 km/h) |
| 95 mph (152.89 km/h) | 102.29 mph (164.62 km/h) |
| 100 mph (160.93 km/h) | 107.68 mph (173.29 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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