Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/90-18 | 165/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.98 (736.2) | 29.69 (754.2) | 0.71 (18) 2.4% |
| Width inches (mm) | 6.1 (155) | 6.5 (165) | 0.39 (10) 6.5% |
| Circum. inches (mm) | 91.06 (2312.84) | 93.28 (2369.39) | 2.23 (56.55) 2.4% |
| Sidewall Height inches (mm) | 5.49 (139.5) | 5.85 (148.5) | 0.35 (9) 6.5% |
| Revolutions per mile (km) | 695.83 (432.37) | 679.22 (422.05) | -16.61 (-10.32) -2.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.49 mph (32.97 km/h) |
| 25 mph (40.23 km/h) | 25.61 mph (41.22 km/h) |
| 30 mph (48.28 km/h) | 30.73 mph (49.46 km/h) |
| 35 mph (56.33 km/h) | 35.86 mph (57.7 km/h) |
| 40 mph (64.37 km/h) | 40.98 mph (65.95 km/h) |
| 45 mph (72.42 km/h) | 46.1 mph (74.19 km/h) |
| 50 mph (80.47 km/h) | 51.22 mph (82.43 km/h) |
| 55 mph (88.51 km/h) | 56.34 mph (90.68 km/h) |
| 60 mph (96.56 km/h) | 61.47 mph (98.92 km/h) |
| 65 mph (104.61 km/h) | 66.59 mph (107.17 km/h) |
| 70 mph (112.65 km/h) | 71.71 mph (115.41 km/h) |
| 75 mph (120.7 km/h) | 76.83 mph (123.65 km/h) |
| 80 mph (128.75 km/h) | 81.96 mph (131.9 km/h) |
| 85 mph (136.79 km/h) | 87.08 mph (140.14 km/h) |
| 90 mph (144.84 km/h) | 92.2 mph (148.38 km/h) |
| 95 mph (152.89 km/h) | 97.32 mph (156.63 km/h) |
| 100 mph (160.93 km/h) | 102.44 mph (164.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1728 | 2008 | 2162 | 2258 | 2361 | 2435 | 2516 | 2611 | 2744 | 2876 | 3023 | 3141 | 3354 | 3589 | 3773 | 3891 | 3957 | 4200 | 4538 | 5274 |
Better Fuel Economy Factory Ratios Increased Power
