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

A flat tire that’s not addressed can take a terrible toll on the rest of your car. Until you have it repaired or replaced, drive your 840i as little as possible to reduce your risk of damage to the wheels and alignment – or further damage to that already struggling tire!

Is temporary sealant bad for my BMW's tires?

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.

Can’t I just keep my spare tire on for a while?

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 840i 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 840i tires repaired?

Your nearest Firestone Complete Auto Care is equipped to handle most BMW 840i tire repairs, but it depends on how severe the damage is.

What is causing the tires on my 840i to keep losing air?

Possible reasons for your 840i tires continuously losing air include a leaking valve steam, wheel damage, and a puncture or hole in the rubber.

Is it necessary to replace all four BMW 840i tires at once?

Replacing all four tires on your 840i is not always necessary. However, it is recommended that you replace tires in pairs or all four tires at the same time for safety and performance reasons. If you have two new tires and two worn tires, the worn tires may not grip the road as well as the new tires, which could cause your car to slide or lose control. Always refer to your vehicle owner’s manual since some vehicles require you to replace all four tires if there is a tread difference greater than 3/32”.

2021 BMW 840i Flat Tire Repair Service

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Repairing Your BMW 840i Tire

City populations are exploding. New roads and buildings are springing up. There's construction around every corner! That means more tire-damaging road debris and flat tires. If the road has been rough on your 2021 BMW 840i tires, Firestone Complete Auto Care can help. Our tire technicians can determine whether it's safe to plug and patch the tire, or whether it needs to be replaced. To start, we’ll consider the location of tire damage, the type of issue, the size and scope of the damage, and the amount of wear on your tires.

If a repair on your 2021 BMW 840i tire is feasible and safe, we’ll get to work on the steps to fix it: (1) Separate the tire from the vehicle wheel, (2) fill the puncture to keep the moisture out, and (3) secure and seal the inner tire liner to ensure the tire is airtight.

BMW 840i Tire Replacement

Unfortunately, some 2021 BMW 840i tire damage can’t be effectively repaired. Tires with less than 2/32nd inch tread remaining can't be repaired, no matter how minor the damage. 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 tire puncture with a diameter bigger than ¼ inch; a puncture in the tire sidewall (or anywhere else that’s not within the tread area); a tire with two or more punctures that are less than 16 inches away from each other; and a tire with cuts or tread separation.

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. But, if you’ve recently replaced your tires and they don’t have significant wear, a new set might not be needed. It’s possible that you will only need to replace the tire that’s damaged – just make sure it’s the same size, type, and brand as the rest of your tires. 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.

Do I Need a Tire Inspection for My BMW 840i?

Some tire issues can cause you to have a flat, but other damage isn't so noticeable right away. Inconspicuous issues like bulging sidewalls, exhaust noise, leaks, or bent rims may indicate issues that need immediate attention. Stay ahead of potentially dangerous tire issues. Bring your 2021 BMW 840i in for a tire inspection.

BMW 840i Tire Repair Questions

What happens if I drive my BMW on a flat tire? A flat tire that’s not addressed can take a terrible toll on the rest of your car. Until you have it repaired or replaced, drive your 840i as little as possible to reduce your risk of damage to the wheels and alignment – or further damage to that already struggling tire!
Is temporary sealant bad for my BMW's tires? 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.
Can’t I just keep my spare tire on for a while? 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 840i 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 840i tires repaired? Your nearest Firestone Complete Auto Care is equipped to handle most BMW 840i tire repairs, but it depends on how severe the damage is.
What is causing the tires on my 840i to keep losing air? Possible reasons for your 840i tires continuously losing air include a leaking valve steam, wheel damage, and a puncture or hole in the rubber.
Is it necessary to replace all four BMW 840i tires at once? Replacing all four tires on your 840i is not always necessary. However, it is recommended that you replace tires in pairs or all four tires at the same time for safety and performance reasons. If you have two new tires and two worn tires, the worn tires may not grip the road as well as the new tires, which could cause your car to slide or lose control. Always refer to your vehicle owner’s manual since some vehicles require you to replace all four tires if there is a tread difference greater than 3/32”.

Repair Services for Your 2021 BMW 840i

Nothing lasts forever. Even your BMW 840i's many parts and pieces. When something breaks, we're ready. Click on a repair below to learn more about 2021 BMW 840i repairs.