Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/60-17 | 150/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.03 (635.8) | 26.27 (667.2) | 1.24 (31.4) 4.9% |
| Width inches (mm) | 6.69 (170) | 5.91 (150) | -0.79 (-20) -11.8% |
| Circum. inches (mm) | 78.64 (1997.42) | 82.52 (2096.07) | 3.88 (98.65) 4.9% |
| Sidewall Height inches (mm) | 4.02 (102) | 4.13 (105) | 0.12 (3) 2.9% |
| Revolutions per mile (km) | 805.71 (500.64) | 767.79 (477.08) | -37.92 (-23.56) -4.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.99 mph (33.78 km/h) |
| 25 mph (40.23 km/h) | 26.23 mph (42.22 km/h) |
| 30 mph (48.28 km/h) | 31.48 mph (50.66 km/h) |
| 35 mph (56.33 km/h) | 36.73 mph (59.11 km/h) |
| 40 mph (64.37 km/h) | 41.98 mph (67.55 km/h) |
| 45 mph (72.42 km/h) | 47.22 mph (76 km/h) |
| 50 mph (80.47 km/h) | 52.47 mph (84.44 km/h) |
| 55 mph (88.51 km/h) | 57.72 mph (92.89 km/h) |
| 60 mph (96.56 km/h) | 62.96 mph (101.33 km/h) |
| 65 mph (104.61 km/h) | 68.21 mph (109.77 km/h) |
| 70 mph (112.65 km/h) | 73.46 mph (118.22 km/h) |
| 75 mph (120.7 km/h) | 78.7 mph (126.66 km/h) |
| 80 mph (128.75 km/h) | 83.95 mph (135.11 km/h) |
| 85 mph (136.79 km/h) | 89.2 mph (143.55 km/h) |
| 90 mph (144.84 km/h) | 94.44 mph (151.99 km/h) |
| 95 mph (152.89 km/h) | 99.69 mph (160.44 km/h) |
| 100 mph (160.93 km/h) | 104.94 mph (168.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1954 | 2270 | 2444 | 2553 | 2669 | 2752 | 2844 | 2952 | 3101 | 3251 | 3417 | 3550 | 3791 | 4057 | 4265 | 4398 | 4473 | 4748 | 5130 | 5961 |
Better Fuel Economy Factory Ratios Increased Power
