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Run-flat Tires

I hear BMW uses them for some SUVs, but what do people think about them for other SUV brands?

My new SUV comes with no spare at all(!)

Old 01-23-2021, 12:39 PM
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My wife’s new car has run flats. The Tpms indicated a right rear loss of pressure. Inflated. Drove to discount and they fixed the flat. No big deal. You might consider a 12 volt air compressor if you have issues on the road. Griot sells one for 70 bucks.
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Old 01-23-2021, 04:04 PM
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I have them on my BMW 335d. They are Perreli summer performance tires and seem to work well, except, more noisy than regular tires. Not to bad and this is my observation.
Old 01-23-2021, 04:04 PM
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OEM on my Benz, ditched them when they wore out. They ride ridiculously hard and handle like crap, 100% improvement in everything.
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Old 01-23-2021, 04:46 PM
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Vehicle manufacturers are getting away from spare tires. They’re heavy and it’s hard to comply with new fuel efficiency standards carrying all those extra kilos around.

Run flats are going to become the norm. Or just having nothing.
Old 01-23-2021, 04:52 PM
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^^ I've heard some manufacturers are going back to spares because consumers are complaining. Or, offering a spare tire (at the time of purchase) as an option.
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Old 01-23-2021, 05:13 PM
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OEM on my Z4.
Bridgestone Potenza, IIRC.

Not the most comfortable tire, I must admit.
I bought a tire plug kit, a small aircompressor and a can with latex sealant to fix leaks from within.
Next set of tires will be normal non run-flats.
I read that they will improve handling and comfort.
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Old 01-24-2021, 01:03 AM
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I have them on 3 of 4 BMWs. Definitely on the X3, X5 and mom's 328i. I took off the stock 19s on my 535i M Sport, and put on 20s non rf and lowering springs. Rides about the same. My E53 X5 is lowered with 19" F15 X5 rf and it doesn't ride much differently than with the stock 17" non rf. I also have a set of F15 19" wheels and rf on the X3. It rides a little softer than the stock 17" rf due to the taller sidewall.
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Old 01-24-2021, 01:19 AM
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Had a 2006 335xi with RFTs. They were OK handling and riding wise, but expensive to replace.

At my age and with a bad back, I'm not planning on changing tires on the side of the road anymore, so I pay GEICO a little extra for roadside assistance.
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Old 01-24-2021, 04:52 AM
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Hate them, heavy, loud and expensive.
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Old 01-24-2021, 07:55 AM
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They were on my wife's 2011 BMW X5. After replacing two, I found I could replace all 4 for less than the price of one run flat! And the spare kit added about $200.
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Old 01-24-2021, 08:03 AM
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I like em , but I only put 16 inch 205/55 runflats on my daily 120D
Narrow tire, good in the wet,
High side wall so no risk of curb rash no matter what I do

They feel like a 17 inch regular tire.. no comfort problems
I briefly went back to non run flats on a previous 16 inch BMW 118D.. and the sidewall flex gave me to much lateral movement surface/rim.. hated it.. Made me seasick in the twisties..
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Old 01-24-2021, 10:00 AM
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BS thread started by a permanent resident of the island, to get his typical three posts in before jumping back to PARF.
Old 01-24-2021, 12:11 PM
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There seems to be a diversity of opinion on these tires.


And a troll too, even tho Island didn't post on this thread.


Thanks for all the info.

Old 01-24-2021, 03:34 PM
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