Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 255/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 23.03 (585) | -0.2 (-5) -0.8% |
| Width inches (mm) | 7.48 (190) | 10.04 (255) | 2.56 (65) 34.2% |
| Circum. inches (mm) | 72.97 (1853.54) | 72.36 (1837.83) | -0.62 (-15.71) -0.8% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 4.02 (102) | -0.1 (-2.5) -2.4% |
| Revolutions per mile (km) | 868.25 (539.51) | 875.68 (544.12) | 7.42 (4.61) 0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.83 mph (31.91 km/h) |
| 25 mph (40.23 km/h) | 24.79 mph (39.89 km/h) |
| 30 mph (48.28 km/h) | 29.75 mph (47.87 km/h) |
| 35 mph (56.33 km/h) | 34.7 mph (55.85 km/h) |
| 40 mph (64.37 km/h) | 39.66 mph (63.83 km/h) |
| 45 mph (72.42 km/h) | 44.62 mph (71.81 km/h) |
| 50 mph (80.47 km/h) | 49.58 mph (79.79 km/h) |
| 55 mph (88.51 km/h) | 54.53 mph (87.76 km/h) |
| 60 mph (96.56 km/h) | 59.49 mph (95.74 km/h) |
| 65 mph (104.61 km/h) | 64.45 mph (103.72 km/h) |
| 70 mph (112.65 km/h) | 69.41 mph (111.7 km/h) |
| 75 mph (120.7 km/h) | 74.36 mph (119.68 km/h) |
| 80 mph (128.75 km/h) | 79.32 mph (127.66 km/h) |
| 85 mph (136.79 km/h) | 84.28 mph (135.64 km/h) |
| 90 mph (144.84 km/h) | 89.24 mph (143.61 km/h) |
| 95 mph (152.89 km/h) | 94.19 mph (151.59 km/h) |
| 100 mph (160.93 km/h) | 99.15 mph (159.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2228 | 2589 | 2788 | 2911 | 3044 | 3139 | 3243 | 3366 | 3537 | 3708 | 3897 | 4049 | 4324 | 4628 | 4865 | 5016 | 5102 | 5415 | 5851 | 6799 |
Better Fuel Economy Factory Ratios Increased Power
