Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 285/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 26.22 (666) | 2.99 (76) 12.9% |
| Width inches (mm) | 7.48 (190) | 11.22 (285) | 3.74 (95) 50% |
| Circum. inches (mm) | 72.97 (1853.54) | 82.37 (2092.3) | 9.4 (238.76) 12.9% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 5.61 (142.5) | 1.5 (38) 36.4% |
| Revolutions per mile (km) | 868.25 (539.51) | 769.17 (477.94) | -99.08 (-61.57) -11.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.58 mph (36.33 km/h) |
| 25 mph (40.23 km/h) | 28.22 mph (45.42 km/h) |
| 30 mph (48.28 km/h) | 33.86 mph (54.5 km/h) |
| 35 mph (56.33 km/h) | 39.51 mph (63.58 km/h) |
| 40 mph (64.37 km/h) | 45.15 mph (72.67 km/h) |
| 45 mph (72.42 km/h) | 50.8 mph (81.75 km/h) |
| 50 mph (80.47 km/h) | 56.44 mph (90.83 km/h) |
| 55 mph (88.51 km/h) | 62.08 mph (99.92 km/h) |
| 60 mph (96.56 km/h) | 67.73 mph (109 km/h) |
| 65 mph (104.61 km/h) | 73.37 mph (118.08 km/h) |
| 70 mph (112.65 km/h) | 79.02 mph (127.17 km/h) |
| 75 mph (120.7 km/h) | 84.66 mph (136.25 km/h) |
| 80 mph (128.75 km/h) | 90.31 mph (145.33 km/h) |
| 85 mph (136.79 km/h) | 95.95 mph (154.42 km/h) |
| 90 mph (144.84 km/h) | 101.59 mph (163.5 km/h) |
| 95 mph (152.89 km/h) | 107.24 mph (172.58 km/h) |
| 100 mph (160.93 km/h) | 112.88 mph (181.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1957 | 2274 | 2449 | 2557 | 2674 | 2757 | 2849 | 2957 | 3107 | 3257 | 3423 | 3557 | 3798 | 4065 | 4273 | 4406 | 4481 | 4756 | 5139 | 5972 |
Better Fuel Economy Factory Ratios Increased Power
