What Happens When A RUNFLAT Goes FLAT?

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In today's video, we show you what happens when your runflat tire goes flat, and what it looks like when you drive on it at 50mph.
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[@markbrayX]

As my tire was deflating on my way home, I made it into the garage with 12 psi. Now it is flat. I called and ordered a new one, and after watching this video, feel confident that I can drive to the tire store 2 miles away, when the tire comes in. Thanks so much for sharing this.

[@kerny7678]

I drove like 45 miles on a run flat once. Tire started overheating after 35 miles or so and had to slow down. Worked great, but still put on go flats the next day.

[@plasmac9]

My experience with run flats is they are much more susceptible to damage. You hit a pothole or something else in the road, the tire won't go flat but there's a good chance the sidewall is going to bubble and then the tire needs to be replaced.

[@hockeygoalie35]

Or you're more likely to bend the rim, as the force transmits to the rim instead of gets absorbed.

[@DC-dc6ey]

@@hockeygoalie35 Or both. Been there done that 🤣

[@destruxandexploze2552]

Bruh my tire just bubbled from hitting a pothole. I’m replacing the run flats with Michelin Pilot Sport 4S

[@LLUEVE]

Just happened to me on my MB, had to replace two tires. $1,000 pirelli’s. Blah

[@luis9555100]

Has rf and hit a pothole on the expressway. It tore the side wall open

[@jmciver767]

Great vid! And for those that did not know, with the X7, you can also get a space saver spare (and emergency tools) that will fit under the 3rd row seat. Either the OEM one (BMW has a retrofit kit if you did not get the factory space saver spare option) or there are aftermarket options. For my X7 (which also came off the dealer lot with runflats and no factory spare), I purchased the OEM space saver spare wheel/tire, and added my own emergency tools (including an air pump), and it all fits in the OEM space saver spare compartment under the 3rd row seat.

[@hamada128]

Where did you get the spare from? I too would prefer to have a spare on my X7. Thx

[@MrGeorge0285]

This is news! No one at the dealer offered this to my brother and he got a flat 150kms away from home. BMW came and picked up the car after 2 hours and he took a cab home.

[@remythemaltipoo]

I drove 40 mi. on failed runflat at 40mph. in my 328i, tire started flopping last 10 miles. When I got home, inner sidewall of tire had virtually separated from the tread entirely. I replaced all four tires with standard go flats, I will take my chances with some stop leak next time. Runflats are not worth the vast increase in cost over standard tires. Get a AAA membership and just have the car towed home, much cheaper.

[@ywjpheej9116]

You must got the cheap run flat tires. I had a flat on my corvette and drove 67 miles sometimes up to 60 mph. I patched and use it for 3 months before replace with a new one.

[@paulabulluck640]

Thank you for this! New owner of a 2012 F30 and bought run flats “just because” basically. But never knew what to expect if damage occurs. In the back of my mind always wondered if they were really any better.

[@afarrel3195]

you should've bought the lci model tbh

[@JeeperZJ]

I caught a deep pothole in my f30 on the highway about 20m from my home. Lf Tire immediately went flat and I knew it, I was able to drive fast enough to keep up with traffic on the highway I was on for another 15m which was about 70mph. I got off the highway when it got to a more windy section and drove on the local roads at no more then 30mph until I got home. There's no chance I would've been able to do that on a regular tire.

[@243wayne1]

I caught one in my F12 Superfast and let me tell you, it's the only tire to buy.

[@sammyg805]

I had nail in my run flat tyre and I drove 2 hours with no problem and it was still fine for several journeys before I changed it

[@sandervn7836]

Had a flat with mine when the tire was just 2 weeks old. I do keep a small compressor in my car, inflated the flag one and drove to a shop. It was only a nail, so it deflated slowly. Because of inflating the tire they were actually able to plug the tire.

[@crow7717]

i am sitting on the side of the road, watching the video and wondering should I continue driving with the tire in this condition. THANK YOU !!! 😅

[@vincentdiaz8616]

Great Video !! Helps me in deciding!! Of course to buy.

[@FaTaLiizM]

I drove about 110 miles on a runflat once XD from Hollywood to Palm Springs. Drive was sketchy as hell, but it made it with no issues. Tire actually looked like it was in perfect shape after the 110 miles lol

[@243wayne1]

Across the Death Valley mind you... Now THAT was dumb.

[@jeromecampbell1008]

I've been lucky with tires for the longest, then I bought a 4 series with my 1st runflats, hit a pothole the 1st week of owning the car and blew out my Runflats, had a spare tire from my previous bmw put it on, hit another pothole within the same week and blew out my other runflat, have not bought any runflats since

[@F80Ho]

Bryan stabbing and drilling into the tire 🤣👏🏽

[@billsawyer5265]

NEVER... Mine were taken off with in a week. 2am on I95 on a holiday weekend, 300 miles from home. Now what do you do? I will keep my new spare

[@socalmrt]

After like a week of owning my 2022 M340i, I managed to get a nail on the right front tire and somehow a bolt in the rear driver side tire at the same time. My luck. Let’s just say, it was an expensive experience. Somehow, almost every time I buy a new car, this happens within weeks of ownership.

[@plasmac9]

Tire and wheel package is pretty much a must when you have run flats. On my 540 those tires were $480 each.

[@James_Edward59]

Look at the glass half full, at least you worked hard enough to put yourself in a position to be able to buy new vehicles and be able to pay for the repairs.

[@aerth4x]

At least in germany a new BMW car comes with tire guarantee for 3 years.

[@brianfortenberry1012]

Good timing for this one. Just had my first experience with a “flat” run flat tire. Is there any data that says you have to change all on x drives?

[@n0nth3t0k3m0n]

On most awd/4wd systems you want to have a square set up with all having the same tread

[@snowman2834]

If the other 3 are pretty worn out yes. They'll spin at different speeds and wear out drivetrain components

[@James_Edward59]

Dang I never thought about that, that sucks having to replace all 4 because one went bad even if the other 3 still have like 50% tread left

[@parthdinubhai]

nothing like a fresh kies thumbnail

[@MCompeticione]

Lol I had a puncture and kept filling it up. The nail eventually acted like a plug and I was able to hit 135

[@thedombale]

I use my rft tires michelin on supra mk5. It help me for a while after that the sidewall pop up cuz of bumpy road and i have to replace whole tire

[@rodmanser7573]

Pirelli, Conti and Bridgestone only BMW Star RSC approved RF's. No more Michelin's? Drive 50 miles and the tire is toast no matter what made it flat. Directional control will be bad but you can make 50 mph, exceed that speed and it's Russian roulette as to how many miles you will run. Also for alignments on staggered set ups, you'll want to replace them in pairs - not just one tire. And, finally if you leave the car parked for long periods you'l want some chalks so they don not become lumpy - RF are much worse. But it's $900 for a front set and $1000 for a rear set.

[@RBZfun_yT]

I have a X3 . The same rear tire got nails twice . One front tire got damaged on the side within one year …… very expensive to be replaced $600 per tire. 😢

[@ilgatto7327]

Great video! Can you do a video on how to fix a run flat tire.

[@JeeperZJ]

You buy a new one, patching run flat tires doesn't always work.

[@dylanvizanko8615]

What a great video. Thank you

[@EvilB58]

Whenever you get a chance can you make a video on either the “Emergency call malfunction” or the “E-Brake cable retainer clip” f30.

[@herrosigns8353]

For the E-Brake clip, search up on KZbin, Justin Buice. “If your BMW makes this horrible sound, here’s how to fix it” He explains step by step how to replace the retainer clip for the E-Brake.

[@DP-zo8rn]

Hey, I have a question. So is it possible to record the screen of my idrive system ? I have a BMW F30 with NBT Evo ID6. I know that if you have apple car play activated and screenshot on your phone it will also screenshot the idrive screen but that's something different. I want to know if I can do it with normal idrive system or even record it ?

[@jamdc2000]

can these tires be fixed? I mean not the one on the video with all those holes, roads are poorly mantained here in my country so I was considering swaping my all seasons with run flats, the only concern is that the reviews at tirerack say that they are rally stiff and hard on the sides and the ride is not as comfortable as conventional tires.

[@ilianstoimenov6619]

You don't feel it mainly because of the active suspension which I assume the car is equipped with and the computer adjusts according to the pressure monitor reading. Add the elecric steering and the car goes senseless. On a regular shocks you can tell what is going on for sure ;0-)

[@johnnylawson3825]

So I should I be good to drive about 15 miles on a flat to get to the tire shop

[@md8744]

Love this review

[@jesses2976]

This happened on my F30 when I worked 100 miles one way and I seen the light go on when I was on the freeway going home from work. I was like oh I’m fine and drove back home and was doing 80 plus MPH. When I got home I smelt rubber and drove it to the tire shop and they were concerned when they took off the tire because inside was shot and needed to be replaced which I did. So yea it’s totally worth it to me ! I have them on my 650i Gran Coupe now. Now don’t do the 80 MPH cuz I feel I was lucky lol.

[@JohnSRR-lw4bx]

Runflats on a SUV for the daily commute is fine, but never on a sportscar.

[@CadillacCentral]

Drive 35 miles in a mountain terrain on a ripped run flat with 6psi at 15moh or less. Made it to the tire shop, it is possible.

[@jaykim3955]

Great Video and Thanks!

[@AveGuy1]

You wore those tires down to the tire wear indicator

[@jeromecampbell1008]

I've been lucky with tires for the longest, then I bought a 4 series with my 1st runflats, hit a pothole the 1st week of owning the car and blew out my Runflats, haven't bought runflats since

[@tunedupty]

Love the channel ! Been following for such a long time and gave me a lot of love for the car scene. You’re channel gave me hope to create my channel for bmws !

[@thejungatron6792]

Can we get a g20 m340i jacking points video? no one has anything only for it :-) Thanks @Kiesmotorsports!

[@GodKing804]

Yeah you don't wanna be stuck in Philly 🤣😇

[@riseup4473]

My daughter’s gone through 3 RF tires in 6 months. Just bought my last one.

[@TommyLGarage]

Great investment for my wife’s car….which is why I drilled through the tire!

[@ahmedkhorshed3540]

superlike for your videos

[@snowman2834]

I noticed they were almost bald so I'm like thats probably why they're killing this tire lol

[@danwebster5439]

My understanding is that they cannot be repaired even if it's a nail in the tread, as opposed to a sidewall puncture? Anyone?

[@JeeperZJ]

They can, but the repair doesn't always hold and you can end up with a leak anyway.

[@bestdiycarcustomization941]

I literally am at the tire shop watching the because my e88 just split the sidewall

[@mikemuoio2340]

The problem with run-flats is you don't know they are flat. You can press the sidewall of a run flat tire that is completely flat and it will be rock hard. You need to feel the actual surface of the tire to know if you have a flat. Happened to me today.

[@sirreginaldthe4th]

Run flats are required to have TPMS sensors. So not sure how you don't know you have a flat tire unless your TPMS system is not functional.

[@b286guy]

I hate run flat tires. Noisy and harsh ride!

[@swift__]

👍🏻👍🏻

[@fyttirackarn]

Hmm, my 320 came with runflats. But my later 520 didn’t. Guess the dealer got greedy and cheaped out 🫤