Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-18 | 160/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 25.82 (655.8) | -0.69 (-17.4) -2.6% |
| Width inches (mm) | 7.09 (180) | 6.3 (160) | -0.79 (-20) -11.1% |
| Circum. inches (mm) | 83.26 (2114.92) | 81.11 (2060.26) | -2.15 (-54.66) -2.6% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.41 (112) | 0.16 (4) 3.7% |
| Revolutions per mile (km) | 760.95 (472.83) | 781.14 (485.38) | 20.19 (12.55) 2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.48 mph (31.36 km/h) |
| 25 mph (40.23 km/h) | 24.35 mph (39.19 km/h) |
| 30 mph (48.28 km/h) | 29.22 mph (47.03 km/h) |
| 35 mph (56.33 km/h) | 34.1 mph (54.87 km/h) |
| 40 mph (64.37 km/h) | 38.97 mph (62.71 km/h) |
| 45 mph (72.42 km/h) | 43.84 mph (70.55 km/h) |
| 50 mph (80.47 km/h) | 48.71 mph (78.39 km/h) |
| 55 mph (88.51 km/h) | 53.58 mph (86.23 km/h) |
| 60 mph (96.56 km/h) | 58.45 mph (94.07 km/h) |
| 65 mph (104.61 km/h) | 63.32 mph (101.9 km/h) |
| 70 mph (112.65 km/h) | 68.19 mph (109.74 km/h) |
| 75 mph (120.7 km/h) | 73.06 mph (117.58 km/h) |
| 80 mph (128.75 km/h) | 77.93 mph (125.42 km/h) |
| 85 mph (136.79 km/h) | 82.8 mph (133.26 km/h) |
| 90 mph (144.84 km/h) | 87.67 mph (141.1 km/h) |
| 95 mph (152.89 km/h) | 92.54 mph (148.94 km/h) |
| 100 mph (160.93 km/h) | 97.42 mph (156.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1988 | 2309 | 2487 | 2597 | 2715 | 2800 | 2893 | 3003 | 3155 | 3307 | 3477 | 3612 | 3857 | 4128 | 4339 | 4475 | 4551 | 4830 | 5219 | 6065 |
Better Fuel Economy Factory Ratios Increased Power
