Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 165/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 26.44 (671.7) | -3.25 (-82.5) -10.9% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 93.28 (2369.39) | 83.08 (2110.21) | -10.2 (-259.18) -10.9% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 4.22 (107.25) | -1.62 (-41.25) -27.8% |
| Revolutions per mile (km) | 679.22 (422.05) | 762.65 (473.89) | 83.42 (51.84) 12.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.81 mph (28.67 km/h) |
| 25 mph (40.23 km/h) | 22.27 mph (35.83 km/h) |
| 30 mph (48.28 km/h) | 26.72 mph (43 km/h) |
| 35 mph (56.33 km/h) | 31.17 mph (50.17 km/h) |
| 40 mph (64.37 km/h) | 35.62 mph (57.33 km/h) |
| 45 mph (72.42 km/h) | 40.08 mph (64.5 km/h) |
| 50 mph (80.47 km/h) | 44.53 mph (71.67 km/h) |
| 55 mph (88.51 km/h) | 48.98 mph (78.83 km/h) |
| 60 mph (96.56 km/h) | 53.44 mph (86 km/h) |
| 65 mph (104.61 km/h) | 57.89 mph (93.16 km/h) |
| 70 mph (112.65 km/h) | 62.34 mph (100.33 km/h) |
| 75 mph (120.7 km/h) | 66.8 mph (107.5 km/h) |
| 80 mph (128.75 km/h) | 71.25 mph (114.66 km/h) |
| 85 mph (136.79 km/h) | 75.7 mph (121.83 km/h) |
| 90 mph (144.84 km/h) | 80.16 mph (129 km/h) |
| 95 mph (152.89 km/h) | 84.61 mph (136.16 km/h) |
| 100 mph (160.93 km/h) | 89.06 mph (143.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1941 | 2255 | 2428 | 2535 | 2651 | 2734 | 2824 | 2932 | 3080 | 3229 | 3394 | 3526 | 3766 | 4030 | 4237 | 4369 | 4443 | 4716 | 5096 | 5921 |
Better Fuel Economy Factory Ratios Increased Power
