What happens if I drive my BMW on a flat tire?

Driving on a flat tire is not a good idea. Your M850i xDrive engine will keep running with a flat tire, but you could damage your wheel by continuing to drive on a flat.

Can I use an emergency/temporary sealant to fix my BMW's flat tire?

A temporary sealant may be able to help you get to a repair location safely. But temporary or emergency sealants could possibly damage TPMS sensors, and in some cases may even void the warranty on your Bridgestone or Firestone tires. If your tire needs extensive repair, sealant can add time and labor costs to the process.

How long can I drive my BMW on a spare tire?

While this sounds great in theory, keep in mind that most spare tires are not designed for distance or speed. The compact spare tire that most likely sits inside your 2021 BMW M850i xDrive is intended for only a few days of use, so don’t use it as a substitute for getting your tire repaired.

Where can I get my BMW M850i xDrive tires repaired?

Your local Firestone Complete Auto Care can generally take care of most BMW M850i xDrive tire repairs. However, it depends on the severity of the damage.

Why do my M850i xDrive tires keep losing air?

Your M850i xDrive tires might keep losing air due to a leaking valve stem, puncture or hole in the tire tread or sidewall, or damaged wheel.

Do all four tires on a BMW M850i xDrive have to be replaced at the same time?

It's important to consider replacing your M850i xDrive tires in pairs or all four at once for safety and performance reasons, even if only two of them appear to be worn. If the remaining two tires are significantly newer, they may have different grip than the older tires, which can affect your vehicle’s handling. Always double-check your owner's manual since some vehicles require all four tires to be replaced if there's a tread difference of more than 3/32”.

2021 BMW M850i xDrive Flat Tire Repair Service

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Repairing Your BMW M850i xDrive Tire

Urban areas are booming. Roads are expanding. Everywhere you look, it seems construction is in progress! That means more tire-damaging road debris and flat tires. Firestone Complete Auto Care is here for you when your 2021 BMW M850i xDrive needs flat tire repair or inspection. There’s a chance your tire could be plugged and patched (rather than replaced). Our technicians can inspect your tire and let you know if it is safe to repair. We'll start by evaluating the state of wear, the location of damage, type of damage, and the size of the damage.

If your 2021 BMW M850i xDrive tire puncture can be repaired, the repair process is actually fairly simple: (1) Separate the tire from the vehicle wheel, (2) fill the puncture to keep the moisture out, and (3) seal the inner liner with a repair unit to prevent air loss.

When Is It Time for BMW M850i xDrive Tire Replacement?

Not all 2021 BMW M850i xDrive tire damage can be repaired. Even if your tire damage is minor, if your tires have less than 2/32nd inch of tread remaining, a repair isn’t possible (or safe). Tires with this tread depth or less are no longer safe, so it’s time to replace the damaged tire. If your tire is not yet worn down, there are other forms of damage that simply can’t be repaired, like a puncture in the tire that is ¼ inch or greater in diameter; a tire with a puncture or damage outside the tread area; multiple punctures that are too close together (less than 16 inches between them); and major cuts or separated treads.

Depending on what BMW recommends for your car, you’ll want to consider purchasing one new tire, two new tires, or a new full set. Manufacturers of AWD vehicles, for example, often recommend replacing all four tires at once because AWD systems need uniform tires to operate properly. Just replaced your tires and only one is damaged? You may not need to buy another new full set after all. You might be able to replace one tire as long as it's the same brand, type, and size as the other three. Need help? A tire technician can walk you through the options and help you determine what’s best for your vehicle’s performance and longevity.

BMW M850i xDrive Tire Inspection

A flat tire? That’s pretty hard to ignore. But other tire damage? It’s not always obvious! Bent tire rims, bulging tire sidewalls, leaks under your car, or noise from your exhaust system can all point to tire-related damage that should be addressed quickly. Stay ahead of potentially dangerous tire issues. Bring your 2021 BMW M850i xDrive in for a tire inspection.

Frequently Asked BMW M850i xDrive Tire Repair Questions

What happens if I drive my BMW on a flat tire? Driving on a flat tire is not a good idea. Your M850i xDrive engine will keep running with a flat tire, but you could damage your wheel by continuing to drive on a flat.
Can I use an emergency/temporary sealant to fix my BMW's flat tire? A temporary sealant may be able to help you get to a repair location safely. But temporary or emergency sealants could possibly damage TPMS sensors, and in some cases may even void the warranty on your Bridgestone or Firestone tires. If your tire needs extensive repair, sealant can add time and labor costs to the process.
How long can I drive my BMW on a spare tire? While this sounds great in theory, keep in mind that most spare tires are not designed for distance or speed. The compact spare tire that most likely sits inside your 2021 BMW M850i xDrive is intended for only a few days of use, so don’t use it as a substitute for getting your tire repaired.
Where can I get my BMW M850i xDrive tires repaired? Your local Firestone Complete Auto Care can generally take care of most BMW M850i xDrive tire repairs. However, it depends on the severity of the damage.
Why do my M850i xDrive tires keep losing air? Your M850i xDrive tires might keep losing air due to a leaking valve stem, puncture or hole in the tire tread or sidewall, or damaged wheel.
Do all four tires on a BMW M850i xDrive have to be replaced at the same time? It's important to consider replacing your M850i xDrive tires in pairs or all four at once for safety and performance reasons, even if only two of them appear to be worn. If the remaining two tires are significantly newer, they may have different grip than the older tires, which can affect your vehicle’s handling. Always double-check your owner's manual since some vehicles require all four tires to be replaced if there's a tread difference of more than 3/32”.

Get the Repairs Your 2021 BMW M850i xDrive Needs

Nothing lasts forever. Even your BMW M850i xDrive's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2021 BMW M850i xDrive repairs.