Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 155/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 28.98 (736.2) | -0.71 (-18) -2.4% |
| Width inches (mm) | 6.5 (165) | 6.1 (155) | -0.39 (-10) -6.1% |
| Circum. inches (mm) | 93.28 (2369.39) | 91.06 (2312.84) | -2.23 (-56.55) -2.4% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 5.49 (139.5) | -0.35 (-9) -6.1% |
| Revolutions per mile (km) | 679.22 (422.05) | 695.83 (432.37) | 16.61 (10.32) 2.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.52 mph (31.42 km/h) |
| 25 mph (40.23 km/h) | 24.4 mph (39.27 km/h) |
| 30 mph (48.28 km/h) | 29.28 mph (47.13 km/h) |
| 35 mph (56.33 km/h) | 34.16 mph (54.98 km/h) |
| 40 mph (64.37 km/h) | 39.05 mph (62.84 km/h) |
| 45 mph (72.42 km/h) | 43.93 mph (70.69 km/h) |
| 50 mph (80.47 km/h) | 48.81 mph (78.55 km/h) |
| 55 mph (88.51 km/h) | 53.69 mph (86.4 km/h) |
| 60 mph (96.56 km/h) | 58.57 mph (94.26 km/h) |
| 65 mph (104.61 km/h) | 63.45 mph (102.11 km/h) |
| 70 mph (112.65 km/h) | 68.33 mph (109.97 km/h) |
| 75 mph (120.7 km/h) | 73.21 mph (117.82 km/h) |
| 80 mph (128.75 km/h) | 78.09 mph (125.68 km/h) |
| 85 mph (136.79 km/h) | 82.97 mph (133.53 km/h) |
| 90 mph (144.84 km/h) | 87.85 mph (141.38 km/h) |
| 95 mph (152.89 km/h) | 92.73 mph (149.24 km/h) |
| 100 mph (160.93 km/h) | 97.61 mph (157.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1771 | 2057 | 2215 | 2313 | 2419 | 2494 | 2577 | 2675 | 2811 | 2946 | 3097 | 3217 | 3436 | 3677 | 3866 | 3986 | 4054 | 4303 | 4649 | 5403 |
Better Fuel Economy Factory Ratios Increased Power
