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E63 / E64 6 Series (2004 - 2010)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 10-11-2015, 06:59 PM
mws007 mws007 is offline
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Location: Waterloo
 
Join Date: Oct 2015
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Mein Auto: 2007 BMW 650i Conv
Question 650i conv Run flat tires

My Bridgestone Potenza RFTs on the rear have worn off extremely on the inner edge of the back tires = I believe from the rear wheel canters --- these tires have "outer" marked on them - so can you flip them ???? If you flip, the now inner worn edge of the tire will become the outer edge which will temporarly solve the wear problem.

Also - this is the 2nd BMW - 2004 645i - and now this 650i conv that are burning the crap out of the inner edge of these expensive tires !!! Anyone else having this problem or has fixed this issue???
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Old 10-11-2015, 07:13 PM
HerbP HerbP is offline
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The rear camber is what makes our cars handle so good. You can take some of the camber out, but you will probably need to get the proper bolts, & someone that knows what to do. The Bridgestone tires seem to wear out faster on the rear than other brands. Ditch the runflats, & go to a regular type tire, you will never regret it! Many threads to read on this topic.

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Old 10-11-2015, 07:17 PM
mws007 mws007 is offline
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Mein Auto: 2007 BMW 650i Conv
Flipping tires RFT

Thanks -- do you know if you can flip them though ??
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Old 10-11-2015, 08:07 PM
FredoinSF FredoinSF is offline
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Since they have outer, they are directional and cannot be flipped.
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Old 10-11-2015, 09:31 PM
HerbP HerbP is offline
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Quote:
Originally Posted by mws007 View Post
Thanks -- do you know if you can flip them though ??
You could move them from side to side, but not inside out. If they are worn that bad, why risk any danger that might come from them?
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Old 10-12-2015, 07:37 AM
Biochem Biochem is offline
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Location: Austin, TX
 
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Mein Auto: 2009 650i
And at least on my car, the fronts were a different size than the rears were. So you could go left to right, but not front to back.

And if you are going to go through the hassle of removing/remounting a tire... just get new tires.
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Old 10-12-2015, 07:59 AM
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roseng roseng is online now
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Quote:
Originally Posted by mws007 View Post
My Bridgestone Potenza RFTs on the rear have worn off extremely on the inner edge of the back tires = I believe from the rear wheel canters --- these tires have "outer" marked on them - so can you flip them ???? If you flip, the now inner worn edge of the tire will become the outer edge which will temporarly solve the wear problem.

Also - this is the 2nd BMW - 2004 645i - and now this 650i conv that are burning the crap out of the inner edge of these expensive tires !!! Anyone else having this problem or has fixed this issue???
The 6 series uses a staggered tire set up and several others do too including my 2014 528i MSport. Front and rear are different sizes.

In addition the negative camber (tire/wheel angel) on the rear wheels provides additional support and traction for hard cornering. It is normal for the inside to wear before the outside.

My 650i stock RF tires had a tremendous difference between the inner and outer tread when they wore. It's normal and you cannot cancel out this setting with an alignment. You can get a camber kit to do that and one of our members "Mulchman" did it on his car. He said in normal driving he didn't feel a lot of difference. I think the kit was about $500.

I changed to Michelin PSS (Pilot Super Sport) and the car rides dramatically better and the wear pattern is much more even but still wears more on the inner tread.

Depending on the tire you may or may not be able to swap and rotate the rears depending on the tread pattern. I would not bother, the additional use you will get is not worth the effort nor is the expense of the camber kit. You are not burning the tires, you are driving a performance car that has a special set up that does not wear tires like a "Normal car".

Put on some good rubber and accept that this is the way the car is designed. It's part of the car's performance set-up. Now, go drive it like you stole it.
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Last edited by roseng; 10-12-2015 at 12:10 PM.
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