Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 185/20-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 17.91 (455) | -5.31 (-135) -22.9% |
| Width inches (mm) | 7.48 (190) | 7.28 (185) | -0.2 (-5) -2.6% |
| Circum. inches (mm) | 72.97 (1853.54) | 56.28 (1429.42) | -16.7 (-424.12) -22.9% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 1.46 (37) | -2.66 (-67.5) -64.6% |
| Revolutions per mile (km) | 868.25 (539.51) | 1125.87 (699.58) | 257.61 (160.07) 29.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 15.42 mph (24.82 km/h) |
| 25 mph (40.23 km/h) | 19.28 mph (31.03 km/h) |
| 30 mph (48.28 km/h) | 23.14 mph (37.23 km/h) |
| 35 mph (56.33 km/h) | 26.99 mph (43.44 km/h) |
| 40 mph (64.37 km/h) | 30.85 mph (49.64 km/h) |
| 45 mph (72.42 km/h) | 34.7 mph (55.85 km/h) |
| 50 mph (80.47 km/h) | 38.56 mph (62.06 km/h) |
| 55 mph (88.51 km/h) | 42.42 mph (68.26 km/h) |
| 60 mph (96.56 km/h) | 46.27 mph (74.47 km/h) |
| 65 mph (104.61 km/h) | 50.13 mph (80.67 km/h) |
| 70 mph (112.65 km/h) | 53.98 mph (86.88 km/h) |
| 75 mph (120.7 km/h) | 57.84 mph (93.08 km/h) |
| 80 mph (128.75 km/h) | 61.69 mph (99.29 km/h) |
| 85 mph (136.79 km/h) | 65.55 mph (105.49 km/h) |
| 90 mph (144.84 km/h) | 69.41 mph (111.7 km/h) |
| 95 mph (152.89 km/h) | 73.26 mph (117.91 km/h) |
| 100 mph (160.93 km/h) | 77.12 mph (124.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
