Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/80-17 | 185/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.76 (679.8) | 25.74 (653.8) | -1.02 (-26) -3.8% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 84.08 (2135.65) | 80.87 (2053.97) | -3.22 (-81.68) -3.8% |
| Sidewall Height inches (mm) | 4.88 (124) | 4.37 (111) | -0.51 (-13) -10.5% |
| Revolutions per mile (km) | 753.56 (468.24) | 783.53 (486.86) | 29.97 (18.62) 4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.24 mph (30.96 km/h) |
| 25 mph (40.23 km/h) | 24.04 mph (38.69 km/h) |
| 30 mph (48.28 km/h) | 28.85 mph (46.43 km/h) |
| 35 mph (56.33 km/h) | 33.66 mph (54.17 km/h) |
| 40 mph (64.37 km/h) | 38.47 mph (61.91 km/h) |
| 45 mph (72.42 km/h) | 43.28 mph (69.65 km/h) |
| 50 mph (80.47 km/h) | 48.09 mph (77.39 km/h) |
| 55 mph (88.51 km/h) | 52.9 mph (85.13 km/h) |
| 60 mph (96.56 km/h) | 57.71 mph (92.87 km/h) |
| 65 mph (104.61 km/h) | 62.51 mph (100.61 km/h) |
| 70 mph (112.65 km/h) | 67.32 mph (108.35 km/h) |
| 75 mph (120.7 km/h) | 72.13 mph (116.08 km/h) |
| 80 mph (128.75 km/h) | 76.94 mph (123.82 km/h) |
| 85 mph (136.79 km/h) | 81.75 mph (131.56 km/h) |
| 90 mph (144.84 km/h) | 86.56 mph (139.3 km/h) |
| 95 mph (152.89 km/h) | 91.37 mph (147.04 km/h) |
| 100 mph (160.93 km/h) | 96.18 mph (154.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1994 | 2316 | 2495 | 2605 | 2724 | 2808 | 2902 | 3012 | 3165 | 3318 | 3487 | 3623 | 3869 | 4141 | 4353 | 4488 | 4565 | 4845 | 5235 | 6084 |
Better Fuel Economy Factory Ratios Increased Power
