Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 165/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 27.09 (688.2) | -2.6 (-66) -8.8% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 93.28 (2369.39) | 85.12 (2162.04) | -8.16 (-207.35) -8.8% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 4.55 (115.5) | -1.3 (-33) -22.2% |
| Revolutions per mile (km) | 679.22 (422.05) | 744.36 (462.52) | 65.14 (40.48) 9.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.25 mph (29.37 km/h) |
| 25 mph (40.23 km/h) | 22.81 mph (36.71 km/h) |
| 30 mph (48.28 km/h) | 27.37 mph (44.06 km/h) |
| 35 mph (56.33 km/h) | 31.94 mph (51.4 km/h) |
| 40 mph (64.37 km/h) | 36.5 mph (58.74 km/h) |
| 45 mph (72.42 km/h) | 41.06 mph (66.08 km/h) |
| 50 mph (80.47 km/h) | 45.62 mph (73.43 km/h) |
| 55 mph (88.51 km/h) | 50.19 mph (80.77 km/h) |
| 60 mph (96.56 km/h) | 54.75 mph (88.11 km/h) |
| 65 mph (104.61 km/h) | 59.31 mph (95.45 km/h) |
| 70 mph (112.65 km/h) | 63.87 mph (102.8 km/h) |
| 75 mph (120.7 km/h) | 68.44 mph (110.14 km/h) |
| 80 mph (128.75 km/h) | 73 mph (117.48 km/h) |
| 85 mph (136.79 km/h) | 77.56 mph (124.82 km/h) |
| 90 mph (144.84 km/h) | 82.12 mph (132.17 km/h) |
| 95 mph (152.89 km/h) | 86.69 mph (139.51 km/h) |
| 100 mph (160.93 km/h) | 91.25 mph (146.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1894 | 2201 | 2370 | 2475 | 2587 | 2668 | 2757 | 2862 | 3007 | 3152 | 3313 | 3442 | 3676 | 3934 | 4135 | 4264 | 4337 | 4603 | 4973 | 5780 |
Better Fuel Economy Factory Ratios Increased Power
