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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 > Runflats feel like ass!!!



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      04-11-2008, 12:15 PM   #1
Asclepius
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Runflats feel like ass!!!

Hey guys, just wanted to know if its my tires or if I need balancing or something. I just took off my winter tires and put on my runflats for the first time. I noticed that the car will drive fine for a while then will all of a sudden pull either to the left or right prety hard. and then go back to normal driving. Wtf is going on? I know that these tires are not the greatest but is this what Im gonna have to live with? It doesn't sound normal. Thanks in advance for the help.
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      04-11-2008, 12:22 PM   #2
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Quote:
Originally Posted by Asclepius View Post
Hey guys, just wanted to know if its my tires or if I need balancing or something. I just took off my winter tires and put on my runflats for the first time. I noticed that the car will drive fine for a while then will all of a sudden pull either to the left or right prety hard. and then go back to normal driving. Wtf is going on? I know that these tires are not the greatest but is this what Im gonna have to live with? It doesn't sound normal. Thanks in advance for the help.
Uneven road?
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      04-11-2008, 12:23 PM   #3
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RFT are shxty but not that bad! Either there's something wrong with your RFT because they were stored too long or the alignment is off while they were putting on the RFT.
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      04-11-2008, 01:20 PM   #4
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Had my RFT's re-installed after the long winter, and exact same result - heavy steering feel (makes sense, they weigh 5 lbs. more than the winter non-RFT's) and the pulling left or right as described above.
I don't think it's a balance/mounting issue as the shop I deal with has been doing runflats for years, since Corvettes came with them, and there is no shimmy in the steering wheel.
I'm hoping they will improve as warmer weather comes, the RE050's don't like cold temps, but what a disappointment the first time behind the wheel.
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      04-11-2008, 01:48 PM   #5
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It is called tramlining.

RFTs aren't that bad. They are softer than the 19" wheels and tires I run on my M3 (I put my 335 wheels and tires on my M3 as an experiment).
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      04-11-2008, 02:03 PM   #6
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tramlining indeed i feel it on my new 335xi it not bad at all something must be wrong with ur set
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      04-11-2008, 02:06 PM   #7
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I had my run flats now for 6 months 7000 miles on them and I have no problem's. As bimmer335i07 said it may just be uneven road, that can pull your car left and right.
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      04-11-2008, 03:09 PM   #8
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I'm on my second winter-to-spring tire change, and I feel it each time I switch from winter runflats to stock runflats. Heavy steering feel, twitchiness on road groves, and pulling left or right. You'll get used to it again after a couple weeks. Then the next spring, after you've driven with the higher-profile winter tires you'll notice it again. It's just how it is. It was actually was so noticeable this year I checked all my tire pressures, and then called the dealership. My SA (in his infinite wisdom) said, "give it a few days, you just forgot how it feels"... He was right.
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      04-11-2008, 04:10 PM   #9
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If they feel like ass, shouldn't the ride be soft and smooth?
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      04-11-2008, 05:17 PM   #10
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I guess that all depends on the type of ass... lol
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      04-11-2008, 05:27 PM   #11
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It's normal tramlining. I noticed it last time I switched back to my summer tires, and I notice it again this time. My 17" winters don't tramline nearly as much. The thing is, you notice it right away, but you do get used to it.
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      04-11-2008, 07:41 PM   #12
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I stopped at a gas station just now to check the air pressure. Tire says 51 psi max and tires were inflated only to about 34...guess this might have been the issue cause the ride seems to have gotten better. they still feel pretty crappy though!
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      04-11-2008, 10:22 PM   #13
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I stopped at a gas station just now to check the air pressure. Tire says 51 psi max and tires were inflated only to about 34...guess this might have been the issue cause the ride seems to have gotten better. they still feel pretty crappy though!
I don't know about the E92, but for the E90, the 18" staggered RFT should be 32 psi front, 36 psi rear. Yes, they can have 51 psi max, but that doesn't mean you fill them to 51 psi!
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      04-12-2008, 01:31 PM   #14
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Oh crap...guess I should have read the manual on tire pressure first!!! Went back today to deflate to the reccommended tire pressure, but my ride went back to feeling worse! Steering feels very heavy and wheels pull either to left or right still.
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