Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/55-18 | 195/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.01 (660.7) | 26.44 (671.7) | 0.43 (11) 1.7% |
| Width inches (mm) | 7.28 (185) | 7.68 (195) | 0.39 (10) 5.4% |
| Circum. inches (mm) | 81.72 (2075.65) | 83.08 (2110.21) | 1.36 (34.56) 1.7% |
| Sidewall Height inches (mm) | 4.01 (101.75) | 4.22 (107.25) | 0.22 (5.5) 5.4% |
| Revolutions per mile (km) | 775.34 (481.78) | 762.65 (473.89) | -12.7 (-7.89) -1.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.33 mph (32.72 km/h) |
| 25 mph (40.23 km/h) | 25.42 mph (40.9 km/h) |
| 30 mph (48.28 km/h) | 30.5 mph (49.08 km/h) |
| 35 mph (56.33 km/h) | 35.58 mph (57.26 km/h) |
| 40 mph (64.37 km/h) | 40.67 mph (65.45 km/h) |
| 45 mph (72.42 km/h) | 45.75 mph (73.63 km/h) |
| 50 mph (80.47 km/h) | 50.83 mph (81.81 km/h) |
| 55 mph (88.51 km/h) | 55.92 mph (89.99 km/h) |
| 60 mph (96.56 km/h) | 61 mph (98.17 km/h) |
| 65 mph (104.61 km/h) | 66.08 mph (106.35 km/h) |
| 70 mph (112.65 km/h) | 71.17 mph (114.53 km/h) |
| 75 mph (120.7 km/h) | 76.25 mph (122.71 km/h) |
| 80 mph (128.75 km/h) | 81.33 mph (130.89 km/h) |
| 85 mph (136.79 km/h) | 86.42 mph (139.07 km/h) |
| 90 mph (144.84 km/h) | 91.5 mph (147.25 km/h) |
| 95 mph (152.89 km/h) | 96.58 mph (155.43 km/h) |
| 100 mph (160.93 km/h) | 101.66 mph (163.61 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
