The original equipment manufacturer (OEM) tire size refers to the specific dimensions and type of tires that manufacturer recommends for your BMW 550i model. These dimensions are meticulously calculated to match the vehicle's weight, speed capabilities, handling features, and braking system. The OEM tire size usually includes the tire's width, aspect ratio, construction, and diameter, all of which are important for achieving the manufacturer's intended vehicle performance.
Original equipment tire sizes for BMW 550i may vary based on the year of production and the specific model trim. Some of the most common tire sizes used on BMW 550i are 225/50R17, 245/40R18, 245/35R19, 245/45R18 and 245/40R19. It is imperative to confirm the exact tire size of your BMW 550i before installing new tires. Always refer to the vehicle owner's manual for the correct tire size designated by vehicle's manufacturer.
Maintaining your vehicle's OEM tire size can be crucial for several reasons:
The size of your tires can significantly impact the way your vehicle handles. Larger tires can improve grip, but they might also make the vehicle more difficult to handle, especially in adverse weather conditions. Smaller tires may reduce grip but increase the responsiveness of the vehicle.
Your vehicle's speedometer is calibrated based on the diameter of your OEM tires. Changing the size of your tires can cause the speedometer to read incorrectly, potentially leading to speeding tickets or other driving issues.
The tire size can affect your vehicle's fuel efficiency. Larger tires generally create more rolling resistance, which can lower fuel economy. Conversely, smaller tires may improve fuel economy but could also lead to decreased performance.
The suspension and brake systems are designed to work with a specific tire size. Changing the size of the tires can put additional stress on these components, which can lead to premature wear and potential failure.
Tires are also selected based on the weight of the vehicle. Choosing a tire size that is too small could compromise the vehicle's ability to carry loads safely.
Different tire sizes can affect acceleration, braking, and cornering ability. Changing the tire size from the OEM specifications could result in a less than optimal driving experience.
While it may be tempting to deviate from the OEM tire size for aesthetic or performance reasons, it is important to understand the potential risks and drawbacks associated with such modifications. Adhering to the recommended tire size not only ensures optimal vehicle performance, safety, and fuel efficiency but also preserves your warranty and insurance coverage. Consult your vehicle's manufacturer guidelines or seek professional advice to select the appropriate tire size for your vehicle, always prioritizing safety and the long-term well-being of your investment. Remember, your tire size choice can make a significant difference in how your vehicle performs and keeps you safe on the road.
OEM Tire Size for BMW 550i
We have tire size data for BMW 550i trims manufactured from 2006 to 2016. Select your BMW 550i production year to see its OEM tire size based on model trim.
All listed guides, data and/or calculations are for informational purposes only. Tire-Sizes.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for the correct tire size configuration.