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Run flat tires

Old 05-05-2012, 09:09 AM
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Default Run flat tires

My wifes 09 BMW X5 needs it's first new set of tires. Should I replace the run flats with regular tires? What do you do if you're on a road trip and you puncture a run flat?
Old 05-05-2012, 09:17 AM
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I know this much, my wife's Benz has em. She got a nail in the tire. Dealership came out to replace (roadside assistance). Run flats cannot be patched or plugged. They have to be replaced.
Old 05-05-2012, 09:20 AM
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That's my concern. If you're on a trip you must find a new tire, and pay the price. I also heard the car would ride smoother with regular tires.
Old 05-05-2012, 09:31 AM
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Run flats are stiff as hell and they pretty much get destroyed trying to get them off the rim. If you do regular tires just make sure you have AAA.
Old 05-05-2012, 10:34 AM
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make the switch, but just to be clear, YOU PROBABLY DONT HAVE A SPARE TIRE.......this creates a whole new challenge. AAA is one option, as was said.

The "spare" concern, is the main reason people dont change over to regular tires. I think we can all agree that the ride is better with regular tires, and regular tires are cheaper, etc.
Old 05-05-2012, 10:44 AM
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I don't think the car has spare, but I'll check today. I was prepared to buy one anyway if storage is a possibility.
Old 05-05-2012, 12:34 PM
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Originally Posted by Mars5L View Post
Run flats are stiff as hell and they pretty much get destroyed trying to get them off the rim. If you do regular tires just make sure you have AAA.
Someone please help me out with this, because I'm really missing something here...
If BMW cars with run flat tires don't need a spare, but BMW will come out and put on a new tire for you if you get a flat, what good are the run flat tires if you can't run on them if you do end up with a flat....???

Last edited by Uncas; 05-05-2012 at 12:44 PM.
Old 05-05-2012, 12:47 PM
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Originally Posted by Uncas View Post
Someone please help me out with this, because I'm really missing something here...
If BMW cars with run flat tires don't need a spare, but BMW will come out and put on a new tire for you if you get a flat, what good are the run flat tires if you can't run on them if you do end up with a flat....???
The manual says you can run on them for 80 miles with no air pressure. That's not very far on a road trip.
Old 05-05-2012, 12:58 PM
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Originally Posted by debugger View Post
The manual says you can run on them for 80 miles with no air pressure. That's not very far on a road trip.
Thanks, sure ain't considered very far in Texas.....!!!! ;? ;? ;?
Old 05-05-2012, 02:55 PM
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I think 80 miles can get you to a town most places. If not bring along a donut that fits ur rim or full size spare. Better yet, don't buy cars that use run flats.
Old 05-05-2012, 03:00 PM
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if you dont use run flats be prepared for a different road feel...may be good or bad, but it definetly will not ride the same
Old 05-05-2012, 03:13 PM
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Originally Posted by 08087 View Post
I think 80 miles can get you to a town most places. If not bring along a donut that fits ur rim or full size spare. Better yet, don't buy cars that use run flats.
I checked, no spare. The compartment is there, but it's empty.


Originally Posted by 1997MAKO231 View Post
if you dont use run flats be prepared for a different road feel...may be good or bad, but it definetly will not ride the same
I heard better, but she won't notice as long as it rolls.
Old 05-05-2012, 03:24 PM
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Hmmm. I need a jack, wrench, and a doughnut spare + $600 in standard tires. Or, about $1500 in run flats.
Old 05-05-2012, 04:19 PM
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We have run flats on my wife's car. They ride a little rougher than regular tires but I like the fact that if she get a flat she can keep on driving home. It has happened once and I really am glad we have the run flats.
Old 05-05-2012, 04:54 PM
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http://www.fastcoolcars.com/al-tires...ss-tires-8.htm
Old 05-05-2012, 05:58 PM
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I know several people who changed from run flats to conventional tires and not one of them is going back to run flats. The conventional tires do improve the ride. While were talking about it, tires that are very low profile, like 20, 25, 30 or 35 aspect ratio should be run at a minimum of 40 pounds to help protect the wheel itself from damage. Any less pressure and something like a pot hole edge can deform the tire enough to transfer the impact to the wheel and deform it. How do I know? I have two wheels in the shop being straightened and that was the advice the shop manager gave me.
Old 05-05-2012, 07:49 PM
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I got rid of my wife's 5 series mainly because of run flats and no spare. Just didn't like them and the tire pressure sensor was also screwy and through out false alarms regularly. I'd say ditch them if you can find a place to fit a spare.

No tire dealer or repair shop will plug a run flat but I did it twice myself and both times they held fine. No way was I throwing out a brand new $300 tire with a simple nail hole in the middle of the tread. Plugged easy, just like any other tire.
Old 05-06-2012, 06:14 AM
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My son's 335iC had those tires and he actually traded out of the car rather than get a new set of tires for it. From what I learned about them on Brad's car:

Run flats don't look low on air, so he'd be riding around on 22psi and didn't know it was low.

Service life of run-flats is a LOT less than for regular tires.

As kerno mentioned, dinging rims is common because a low profile combined with low air pressure creates the scene for pot-hole damage.
Old 05-06-2012, 06:49 AM
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One of a few reasons I traded in in my 550 BMW was when it was time to replace th run flats. I kept hearing conflicting information on if I could install non run flats, the tpm system was always screwing up. Turns out to be the best move I made trading it in. But I miss the power and handling.
Old 05-06-2012, 09:09 AM
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In 20 years of driving (and even being a passenger) I can think of 4-5 flat tires, and only recall having to use a spare tire twice - neither on my own car. If you live in a reasonably urban area, I think you could do without runflats pretty easily.

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