Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 300/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 25.63 (651) | 2.4 (61) 10.3% |
| Width inches (mm) | 7.48 (190) | 11.81 (300) | 4.33 (110) 57.9% |
| Circum. inches (mm) | 72.97 (1853.54) | 80.52 (2045.18) | 7.54 (191.64) 10.3% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 5.31 (135) | 1.2 (30.5) 29.2% |
| Revolutions per mile (km) | 868.25 (539.51) | 786.9 (488.95) | -81.36 (-50.55) -9.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.07 mph (35.51 km/h) |
| 25 mph (40.23 km/h) | 27.58 mph (44.39 km/h) |
| 30 mph (48.28 km/h) | 33.1 mph (53.27 km/h) |
| 35 mph (56.33 km/h) | 38.62 mph (62.15 km/h) |
| 40 mph (64.37 km/h) | 44.14 mph (71.03 km/h) |
| 45 mph (72.42 km/h) | 49.65 mph (79.91 km/h) |
| 50 mph (80.47 km/h) | 55.17 mph (88.79 km/h) |
| 55 mph (88.51 km/h) | 60.69 mph (97.67 km/h) |
| 60 mph (96.56 km/h) | 66.2 mph (106.54 km/h) |
| 65 mph (104.61 km/h) | 71.72 mph (115.42 km/h) |
| 70 mph (112.65 km/h) | 77.24 mph (124.3 km/h) |
| 75 mph (120.7 km/h) | 82.75 mph (133.18 km/h) |
| 80 mph (128.75 km/h) | 88.27 mph (142.06 km/h) |
| 85 mph (136.79 km/h) | 93.79 mph (150.94 km/h) |
| 90 mph (144.84 km/h) | 99.31 mph (159.82 km/h) |
| 95 mph (152.89 km/h) | 104.82 mph (168.7 km/h) |
| 100 mph (160.93 km/h) | 110.34 mph (177.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | 2326 | 2505 | 2616 | 2735 | 2821 | 2914 | 3025 | 3178 | 3332 | 3502 | 3639 | 3886 | 4158 | 4371 | 4508 | 4584 | 4866 | 5258 | 6110 |
Better Fuel Economy Factory Ratios Increased Power
