Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-18 | 165/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.32 (643.2) | 26.44 (671.7) | 1.12 (28.5) 4.4% |
| Width inches (mm) | 6.1 (155) | 6.5 (165) | 0.39 (10) 6.5% |
| Circum. inches (mm) | 79.55 (2020.67) | 83.08 (2110.21) | 3.53 (89.54) 4.4% |
| Sidewall Height inches (mm) | 3.66 (93) | 4.22 (107.25) | 0.56 (14.25) 15.3% |
| Revolutions per mile (km) | 796.44 (494.88) | 762.65 (473.89) | -33.79 (-21) -4.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.89 mph (33.61 km/h) |
| 25 mph (40.23 km/h) | 26.11 mph (42.02 km/h) |
| 30 mph (48.28 km/h) | 31.33 mph (50.42 km/h) |
| 35 mph (56.33 km/h) | 36.55 mph (58.82 km/h) |
| 40 mph (64.37 km/h) | 41.77 mph (67.23 km/h) |
| 45 mph (72.42 km/h) | 46.99 mph (75.63 km/h) |
| 50 mph (80.47 km/h) | 52.22 mph (84.03 km/h) |
| 55 mph (88.51 km/h) | 57.44 mph (92.44 km/h) |
| 60 mph (96.56 km/h) | 62.66 mph (100.84 km/h) |
| 65 mph (104.61 km/h) | 67.88 mph (109.24 km/h) |
| 70 mph (112.65 km/h) | 73.1 mph (117.65 km/h) |
| 75 mph (120.7 km/h) | 78.32 mph (126.05 km/h) |
| 80 mph (128.75 km/h) | 83.54 mph (134.45 km/h) |
| 85 mph (136.79 km/h) | 88.77 mph (142.86 km/h) |
| 90 mph (144.84 km/h) | 93.99 mph (151.26 km/h) |
| 95 mph (152.89 km/h) | 99.21 mph (159.66 km/h) |
| 100 mph (160.93 km/h) | 104.43 mph (168.07 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
