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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Tyre Wear advice



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      02-07-2013, 02:48 PM   #23
xPETEZx
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Unless anybody can come up with some bad stories about Thames Tyres, I am getting it done there on Saturday.
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      02-07-2013, 03:28 PM   #24
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Look exactly like mine - Bridgestone RFT on the same 17" wheels. I've had my car since new so I know it hasn't been kerbed or mistreated. They've lasted 25000 which I don't suppose is too bad.
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      02-08-2013, 06:30 AM   #25
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Booked in for 4-new tyres tomorrow morning.

4x Goodyear Eagle F1 Aysmetric 2 for 420 fitted.

4 Wheel alignment will be done as well.
Max charge for this is 63. (If all wheels need adjustment)

Thanks for all the advice guys
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      02-08-2013, 08:31 AM   #26
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Originally Posted by HighlandPete View Post
The type of wear you have is very typical of a Bridgestone RFT on the front of the car. It can wear like that even with a good alignment. The nearside often wears more, as in a lot of driving it takes more abuse, like using lots of roundabouts.

One reason is, although the pressures may be to door plate recommendation, the lowest setting is not high enough to get the car running off of the sidewalls, particularly if the car is used for lots of shortish trips (even up to 15 miles or so), as the tyre doesn't get hot enough to get to working pressure. I know all this through experience, I went through it 6-years ago on my E91, with BMW and Bridgestone. Did a lot of research as my car was still nealy new, obviously there was a cause, or causes. A full KDS showed nothing out of tolerance, and BMW recommended trying an increase of tyre pressure, which I did, found it needed about an extra 0.3bar for normal running. The door plate showed 2.1bar for normal use, I ran 2.4bar to balance ride and wear. Even that small amount slowed the wear, and with conventional tyres fitted there was balanced wear across the tyres. Really confirming it wasn't geometry, but tyre pressures and slow tyre warm up.

I note you are giving very low figures for ride height, (if I'm reading your figures right) so assume the car has been lowered. I wonder if when that was done the geometry was not corrected for the lowered suspension.

Certainly get the geometry checked out, (4-wheel alignment not just a tracking check), as you do need to know there isn't an issue. But don't be surprised if there isn't an issue, unless the lowering has taken it out of specification.

HighlandPete
plus 1 million...

I had a similar wear with rft...
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      02-09-2013, 02:07 PM   #27
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Sorry, what is your tyre size that you got 4x Eagle F1 A2's for 420!? I paid 520 for mine in 225/40/18 and 255/35/18 and that was the absolute cheapest i could find anywhere! EDIT: Plus 50 fitting!!
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      02-09-2013, 04:08 PM   #28
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Got the tyres fitted today as well as 4-wheel alignment/tracking.
Front Right wheel was the only one which needed any adjustment. So paid just 25 for the tracking.
The ride didnt feel a whole lot different tbh. Other half certainly didnt think it was any different.
Haven't had a chance to give it the full beans, so will see how it handles then. Thats when I noticed the Run flats where bouncing around most.

My tyres are 225/45/17 which is probably why you couldn't get anywhere near that price.
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      08-04-2013, 06:53 AM   #29
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Just wondering re: change over from run flat to non run flat, as long as the load ratings are equal or greater, I assume we would be ok?
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      08-04-2013, 10:04 AM   #30
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Just wondering re: change over from run flat to non run flat, as long as the load ratings are equal or greater, I assume we would be ok?
Yep
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