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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 04-18-2013, 11:50 AM
Toronto Z4 Toronto Z4 is offline
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Run flats and low profile tires

When I bought my 335 I Cab one of the best warranties I ever took out was for the tires. I've had about 6-8 replacements in 3 1/2 years I had this car, all paid for by BMW. One time the run flat wrecked the whole side of my car needed about $5,000 in body work, as it didn't run flat and I was only traveling about 50Km's/hr to get to the nearest off ramp on the highway.

Has anyone experienced similar problems? Is it the low profile tire or the run flat technology? I only drive on paved roads....nothing off road.

I've since bought out my lease since I'm over my mileage and want to wait a couple of years until the 4 series has been around a bit or maybe I will get a used 6. I did by a third party bumper to bumper extended warranty for another 60,000 km's and a 3 year tire warranty covers complete tire replacement with same tire, rim repair or replacement. Overall cost for both around $2,300 which I think is a pretty good price.
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  #2  
Old 04-18-2013, 12:05 PM
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I think the guys here have had all kinds of different experiences with the tires on the 335. You might hold the record for destroyed tires & wheels. Results will vary but in my case I took the RFT off pretty quickly maybe 1500/2000 miles & stuck them in my storage shed.

Main reason was they were way to harsh & not tolerant of tar strips or other irregularities in the road. Have had no incidents with my replacement tires, slightly oversized in width but not profile, except for one slow leak that was patched internally. Tires have about 16,000 miles on them.
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  #3  
Old 04-18-2013, 12:21 PM
Joe in Dublin Joe in Dublin is offline
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Low profile run flats just dont work. The rear camber chews up the casing that makes a run flat a run flat. They just destroy themselves. For larger profiles im sure its not as bad
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  #4  
Old 04-18-2013, 01:11 PM
chuckc760 chuckc760 is offline
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Quote:
Originally Posted by bear-avhistory View Post
I think the guys here have had all kinds of different experiences with the tires on the 335. You might hold the record for destroyed tires & wheels. Results will vary but in my case I took the RFT off pretty quickly maybe 1500/2000 miles & stuck them in my storage shed.

Main reason was they were way to harsh & not tolerant of tar strips or other irregularities in the road. Have had no incidents with my replacement tires, slightly oversized in width but not profile, except for one slow leak that was patched internally. Tires have about 16,000 miles on them.
I have had decent luck with my brickstones. Mostly smooth-ish freeway and at 21k miles, the tread in the rears are getting close.

The fonts have pretty deep tread in the meat of the tire. The outer blocks are worn from hard cornering but still acceptable.

The right rear got two slow leaks from screws but were patched.

My only real complaints are:

1. No compliance in rough corners contributing to sketchiness and the car hopping to the side for a sec.

2. They are not that servicable. I am lucky enough to have a shop that will patch them, but it's a hike to get there. A lot of places won't patch them.

Me thinks I should have opted for the warranty for a grand or so.
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  #5  
Old 04-18-2013, 01:18 PM
chuckc760 chuckc760 is offline
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Quote:
Originally Posted by bear-avhistory View Post
I think the guys here have had all kinds of different experiences with the tires on the 335. You might hold the record for destroyed tires & wheels. Results will vary but in my case I took the RFT off pretty quickly maybe 1500/2000 miles & stuck them in my storage shed.

Main reason was they were way to harsh & not tolerant of tar strips or other irregularities in the road. Have had no incidents with my replacement tires, slightly oversized in width but not profile, except for one slow leak that was patched internally. Tires have about 16,000 miles on them.
Did you go with the 235/35/19 and 265/30/19 combo? I am considering that in PS2s. If so, any issues with rubbing or other problems like tramlining?

Some have reported rubbing in that size, but not sure if that was rim dependent or what the story was.
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  #6  
Old 04-18-2013, 01:25 PM
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Quote:
Originally Posted by chuckc760 View Post
Did you go with the 235/35/19 and 265/30/19 combo? I am considering that in PS2s. If so, any issues with rubbing or other problems like tramlining?

Some have reported rubbing in that size, but not sure if that was rim dependent or what the story was.
PS2's suck. Get the PSS.
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  #7  
Old 04-18-2013, 02:28 PM
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Quote:
Originally Posted by chuckc760 View Post
Did you go with the 235/35/19 and 265/30/19 combo? I am considering that in PS2s. If so, any issues with rubbing or other problems like tramlining?

Some have reported rubbing in that size, but not sure if that was rim dependent or what the story was.
245X35X19 - 265X30X19 on stock wheels with no rubbing. I usually post this with tire threads. Since not all 245 265 etc. are actually the same size you need to get the physical measurement of the tire from Tire Rack then compare how much extra clearance you have for bigger tires.

Yokohama tend to be a inch or so wider in the tread than the same sized Goodyear's. Most everybody else fits between them.
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  #8  
Old 04-18-2013, 03:07 PM
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I never destroyed a run flat on my 335i with sport suspension as I replaced them when the car was a few weeks old. I did destroy 7 regular low profile tires and bent 4 rims before I replaced the shocks with Koni FSDs. Since I installed the Konis I have not had an issue.

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  #9  
Old 04-18-2013, 03:47 PM
Toronto Z4 Toronto Z4 is offline
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I like the look of the low profile tire so is the problem primarily with the run flat technology and not so much the low profile? Isn't it logical that it a small stone or nail get's into a low profile tire better chance it to blow than if it is a regular tire?
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  #10  
Old 04-18-2013, 06:29 PM
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pointandgo pointandgo is offline
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Quote:
Originally Posted by Toronto Z4 View Post
When I bought my 335 I Cab one of the best warranties I ever took out was for the tires. I've had about 6-8 replacements in 3 1/2 years I had this car, all paid for by BMW. One time the run flat wrecked the whole side of my car needed about $5,000 in body work, as it didn't run flat and I was only traveling about 50Km's/hr to get to the nearest off ramp on the highway.

Has anyone experienced similar problems? Is it the low profile tire or the run flat technology? I only drive on paved roads....nothing off road.

I've since bought out my lease since I'm over my mileage and want to wait a couple of years until the 4 series has been around a bit or maybe I will get a used 6. I did by a third party bumper to bumper extended warranty for another 60,000 km's and a 3 year tire warranty covers complete tire replacement with same tire, rim repair or replacement. Overall cost for both around $2,300 which I think is a pretty good price.
I'm somewhat confused. Do all cars in Canada come with run-flat tires and the TPMS? I heard that Transport Canada didn't require this technology, although some cars were equipped with it regardless.

I've heard of RF tires shreading when they were driven too long after deflation, or too fast...and since they will generate a lot of heat due to their 'robust' construction, when they come apart they can do damage to the car as 'chunks' of the tire fly off.

For a RF tire to "explode" and come apart after deflation and a low speeds if virtually unheard of.
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  #11  
Old 04-18-2013, 06:48 PM
chuckc760 chuckc760 is offline
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Quote:
Originally Posted by bear-avhistory View Post
245X35X19 - 265X30X19 on stock wheels with no rubbing. I usually post this with tire threads. Since not all 245 265 etc. are actually the same size you need to get the physical measurement of the tire from Tire Rack then compare how much extra clearance you have for bigger tires.

Yokohama tend to be a inch or so wider in the tread than the same sized Goodyear's. Most everybody else fits between them.
If memory serves, you are running the pilot sports (?)
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  #12  
Old 04-18-2013, 07:49 PM
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Conti DW Max performance summer tires.
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  #13  
Old 04-18-2013, 09:34 PM
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Originally Posted by pointandgo View Post
I'm somewhat confused. Do all cars in Canada come with run-flat tires and the TPMS? I heard that Transport Canada didn't require this technology, although some cars were equipped with it regardless.
Canadian E90s have FTM, not TPMS.
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