Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 300/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 26.81 (681) | 3.58 (91) 15.4% |
| Width inches (mm) | 7.48 (190) | 11.81 (300) | 4.33 (110) 57.9% |
| Circum. inches (mm) | 72.97 (1853.54) | 84.23 (2139.42) | 11.26 (285.88) 15.4% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 5.91 (150) | 1.79 (45.5) 43.5% |
| Revolutions per mile (km) | 868.25 (539.51) | 752.23 (467.41) | -116.02 (-72.09) -13.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.08 mph (37.15 km/h) |
| 25 mph (40.23 km/h) | 28.86 mph (46.44 km/h) |
| 30 mph (48.28 km/h) | 34.63 mph (55.73 km/h) |
| 35 mph (56.33 km/h) | 40.4 mph (65.01 km/h) |
| 40 mph (64.37 km/h) | 46.17 mph (74.3 km/h) |
| 45 mph (72.42 km/h) | 51.94 mph (83.59 km/h) |
| 50 mph (80.47 km/h) | 57.71 mph (92.88 km/h) |
| 55 mph (88.51 km/h) | 63.48 mph (102.17 km/h) |
| 60 mph (96.56 km/h) | 69.25 mph (111.45 km/h) |
| 65 mph (104.61 km/h) | 75.03 mph (120.74 km/h) |
| 70 mph (112.65 km/h) | 80.8 mph (130.03 km/h) |
| 75 mph (120.7 km/h) | 86.57 mph (139.32 km/h) |
| 80 mph (128.75 km/h) | 92.34 mph (148.61 km/h) |
| 85 mph (136.79 km/h) | 98.11 mph (157.89 km/h) |
| 90 mph (144.84 km/h) | 103.88 mph (167.18 km/h) |
| 95 mph (152.89 km/h) | 109.65 mph (176.47 km/h) |
| 100 mph (160.93 km/h) | 115.42 mph (185.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1914 | 2224 | 2395 | 2501 | 2615 | 2696 | 2786 | 2892 | 3038 | 3185 | 3348 | 3478 | 3715 | 3975 | 4179 | 4309 | 4382 | 4651 | 5026 | 5841 |
Better Fuel Economy Factory Ratios Increased Power
