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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Can you patch a run-flat-tire?



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      10-02-2012, 10:29 PM   #1
Humble_Bear
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Can you patch a run-flat-tire?

Can you patch a run-flat-tire?
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      10-02-2012, 10:31 PM   #2
LivnLife31
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I have used a plug in the past.
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      10-02-2012, 10:32 PM   #3
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nope
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      10-02-2012, 10:36 PM   #4
Humble_Bear
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I have used a plug in the past.
How long did the plug last?
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      10-02-2012, 10:38 PM   #5
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Quote:
Originally Posted by Humble_Bear View Post
How long did the plug last?
At least 7k miles. I was sick of going back to the dealer with flats. I got rid of the RF's at this point.
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      10-02-2012, 10:58 PM   #6
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It depends....

If the RFT has a nail or screw that is not close to the sidewall AND the tire has not been driven on with low pressure, it can be repaired. BUT...

Most dealers and some independents won't touch them because of liability issues. A normal tire that's been driven on with low pressure will show signs of failure. A RFT may or may not.

I've had nails and screws in my RFT's that never dropped below 28 psi. They were slow leaks. As long as I nursed them along and kept bringing the pressure up to normal, I was fine.

The key question is: "How low is too low tire pressure and how long is too long to drive on them with low pressure?" I don't know.
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      10-03-2012, 12:00 AM   #7
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You can either plug or patch?
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      10-03-2012, 12:14 AM   #8
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Patch yes; I don't know about plugs.

Maybe a tire expert can chime in.
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      10-03-2012, 12:17 AM   #9
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Can it physically be patched - YES


Is it recommended by the tire manufacturer - NO

Is it recommended by BMW - NO.

Should you take that risk - NO.

RFTs need to be replaced in order to maintain their structural integrity to work as a RFT.

With that being said, I patched one and drove on it for 5,000 before I knew any of this information.
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      10-03-2012, 12:29 AM   #10
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I don't see any risk involved at all. Of course BMW, indy shops, and the manufacturer won't recommend it because they are in it to make money. They can make more money by selling you a new tire than patching/plugging you old tire while doing less work. RFTs are just like any other tire except the side wall has a stiffing composite in it, so I would replace it if the hole is too close to the side wall.

I've used patches an plugs for years (I've actually had better luck with plugs). As long as the hole isn't too close to the side wall and you didn't drive on it when it was flat, try it. You have TPMs so you will know if it is leaking. If it starts to leak, oh well it was was worth the shot. If it doesn't, great you saved yourself some money.
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      10-03-2012, 12:44 AM   #11
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Quote:
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I don't see any risk involved at all.

I've used patches an plugs for years (I've actually had better luck with plugs). ...

Did you patch or plug RFT or just regular?
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      10-03-2012, 01:12 AM   #12
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plug it. I did recently. it's fine.
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      10-03-2012, 01:18 AM   #13
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Quote:
Originally Posted by CharlieBear View Post
plug it. I did recently. it's fine.
Keep us updated.

I've been reluctant to buy cars without a spare and I guess I just found my solution. I will put a tire repair kit with compressor in the X1 when it arrives.
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      10-03-2012, 01:23 AM   #14
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I vote get a new tire... but I plugged my RFT with the Slime Tire Plug Kit at wallyworld. $5 vs $300?

Nobody would touch it - especially with the puncture along the side wall. The plug was absolutely fine and stayed on until the tread was done.

Left the kit in my glove box and I'd use it again. Use your best judgement.

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      10-03-2012, 04:23 AM   #15
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RFT's are ironically very fragile...

I wouldn't do it out of safety reasons... Got mine replaced when i drove a flat one...

But that's up to you! I'm not going to recommened something wich i'm not sure it's safe...
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      10-03-2012, 07:31 AM   #16
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I had a nail in my runflat last week.. Dealership said its highly unsafe to patch it, they gave me a new tire free of charge.
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      10-03-2012, 07:46 AM   #17
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Yes. Done it three times. Just like any other tire, if the puncture isn't too close to the sidewall, you can. Trouble is, finding a place to do it and accept the liability. Run flat manufacturers claim they cannot be patched thus a lot of places refuse. Kinda sick when you think about it. What a friggin' waste.
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      10-03-2012, 08:07 AM   #18
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Knock on wood but I've plugged a screw that was in one of my runflats - its lasted at least 5k miles without any signs of leaking.
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      10-03-2012, 08:22 AM   #19
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As long as you haven't driven on a totally deflated run flat, potentially causing hidden sidewall damage, it can be repaired like any other tire. The problem is finding a tire shop willing to do this since they can't be sure it wasn't driven flat and they are legitimately concerned about liability issues, and they would rather sell you a new tire at full price!
Best shot is finding a local gas station willing to plug a simple nail or screw puncture.
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      10-03-2012, 08:25 AM   #20
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Not on the sidewall & do not take to the dealer. AT did plugged and patched on my rear with out issues until now. GL
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      10-03-2012, 08:37 AM   #21
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I would just plug it on your own and go from there if it is away from the sidewall. I have done this on other cars with runflats and they have all been fine. (I have done it about 3-4 times). Its all up to you, I would say if your tires are shot just replace them all, if they are brand new replace that one, and if they only have a few k left in them plug it and wait until you need new tires to replace.
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      10-03-2012, 11:57 AM   #22
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Yes if you havent run it flat. No if you did.
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