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F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

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  #1  
Old 07-06-2013, 10:46 AM
DavidNJ DavidNJ is offline
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Have You Had Runflat Problems on 18" Rims?

I started this question in the RunFlat problem thread, but an posting the question here so it is more visible. This is the link to the question:

http://www.bimmerfest.com/forums/sho...postcount=1391

Quote:
Originally Posted by DavidNJ View Post
There quite a few posts here. Most see to talk about problems with 19" wheels. Some talk about going to 18" wheels as a remedy.

Have people had tire/wheel problems with the 18" rims using runflat tires?

I'd love to use non-RFT tires. But would need to have storage for a space saver spare out of the trunk which the F10 doesn't have.

So...do 18" run flats have problems on our East Coast pothole filled lunar landscape roads?
  • The 245/40s have 3.86" of sidewall height.
  • 245/45s have 4.34".
  • Our current car with 225/55 tires has 4.87", no sidewall problems in 110k miles.
  • My truck, 33" tall 275/60 tires has 6.5".
  • A Ford F150 Raptor with 35" tall 315/70 tires has 8.68".
  • A 35x12.5R15 off road tire has 10".
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  #2  
Old 07-06-2013, 01:18 PM
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markl53 markl53 is online now
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Haven't had any issues with my standard 18" LS2's 245/45 in DC/MD area, 27K miles. No problems with the 17" RFT's on my previous 335i either, they may have been 235/50, I don't recall for sure. Even when I go to downtown DC, I don't seem to find all that many bad potholes. Probably much worse in NY/NJ areas.
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  #3  
Old 07-06-2013, 02:40 PM
The X Men The X Men is online now
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A year and a half with my 18" runflats and no problem what so ever in Boston. I think I have know of one guy in here with 18" tires and sidewall bubbles as oppose to the hundreds of post regarding 19" tires with sidewall bubbles.

Last edited by The X Men; 07-06-2013 at 02:42 PM.
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  #4  
Old 07-06-2013, 04:06 PM
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jimpal jimpal is offline
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Quote:
Originally Posted by The X Men View Post
A year and a half with my 18" runflats and no problem what so ever in Boston. . .
Same here in Minneapolis.
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  #5  
Old 07-06-2013, 04:08 PM
bimmerific bimmerific is offline
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Have You Had Runflat Problems on 18" Rims?

No issues in the Northern NJ/Metro NYC region after two-and-half years of driving my '11 535ix on 18" Conti RFT's (~15k). The same is true for Mrs. Bimmerific after five plus years of driving on 17" Conti RFT's on her '08 335ix. She is scheduled for replacements (same brand as OEM), next week, for mileage (~25k).


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  #6  
Old 07-10-2013, 08:09 AM
328 M Sport 328 M Sport is offline
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Quote:
Originally Posted by The X Men View Post
A year and a half with my 18" runflats and no problem what so ever in Boston. I think I have know of one guy in here with 18" tires and sidewall bubbles as oppose to the hundreds of post regarding 19" tires with sidewall bubbles.
No problems with my 2013 328i M Sport 18" Perilli RF tires. I have hit somer nasty potholes here in upstate N.Y. and no damage to tires or rims to report.

My friend did have a big bubble ( buldge) on his 2012 328 Sport Line with same Perilli tires. Replaced under warranty after a very heated discussion with Service Manager.
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  #7  
Old 07-10-2013, 08:53 AM
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MoldCAD MoldCAD is offline
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Well, my answer to the OP's question is a mixed 'yes & no"

Yes - I ruined 2 winter set wheels in an incident when I had to leave the asphalt to avoid a head-on with a truck; were my winter Dunlops not reinforced RFTs they would probably have gone first (with RFTs, I safely made another 200 km home, and only discovered at the dealer's how severely and beyond repair the inner rims got bent; I had to replace both right side wheels but NOT tires)

No - apart from that incident, I had no single issue with either of my 2 sets (the summer set being Contis RFT on the OEM M-350 wheels) over the total 9,000 miles I did so far.

And the Polish roads certainly aren't better than those in NY area...
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Last edited by MoldCAD; 07-10-2013 at 10:11 AM.
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  #8  
Old 07-10-2013, 09:40 AM
pharding pharding is offline
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18" wheels are definitely more forgiving.
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  #9  
Old 07-10-2013, 10:11 AM
ae86pwr ae86pwr is offline
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I listened to Greg Poland @ Pacific BMW. He recommends wheel & tire protection on anything larger than 18".

My 18" Contis on the AH5 have zero issues so far. It also helps to have the the iDRIVE coded so you get numerical values from TPMS.

Can't say the same for Pirelli tires two weeks ago.

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  #10  
Old 07-11-2013, 07:00 AM
TJH-5 TJH-5 is offline
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535XI 18" coming up on one year no problems so far (fingers crossed)
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  #11  
Old 07-11-2013, 07:36 AM
Yellow Jacket Yellow Jacket is offline
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No issues at 29k miles.
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  #12  
Old 07-13-2013, 02:52 PM
maroon1991 maroon1991 is offline
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No sidewall problems with my 18s . Got a flat @16K after running over a nail, but was able to drive 30mi @ 50mph back home with a big hole in the tire. Had to replace all 4 tires (xdrive) for 1750$ though. Ouch.
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  #13  
Old 07-13-2013, 03:25 PM
DavidNJ DavidNJ is offline
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Location: Warren, NJ
 
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Quote:
Originally Posted by maroon1991 View Post
No sidewall problems with my 18s . Got a flat @16K after running over a nail, but was able to drive 30mi @ 50mph back home with a big hole in the tire. Had to replace all 4 tires (xdrive) for 1750$ though. Ouch.
Two questions:

1) How did a nail create a big hole? Usually nails get make clean punctures that are easily patched, especially if the tire never went all the way flat, which is common.

2) Why did you have to replace all 4 tires? At 16k miles, I imagine your tires may have had 50% of their life remaining. Even if the tread depths would have been different, couldn't the replacement just have been trued/shaved down to the same height?

http://blog.tirerack.com/blog/todds-...an-awd-vehicle

http://blog.tirerack.com/blog/motors...e-at-tire-rack
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  #14  
Old 07-14-2013, 07:41 AM
famaash famaash is offline
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Have You Had Runflat Problems on 18" Rims?

Have a 2013 gran coupe 650i with 20'' run flats.

The car is with the dealer for the third tyre change. It's been only 1 month since I bought the car. Kinda under 5K miles.


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  #15  
Old 07-14-2013, 11:06 AM
williakz williakz is offline
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Run Flat problems? Yeah, but after a fight, the tire guy finally managed to get them off the rims. No problems putting the conventionals on the same rims however. Hope that helps.
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  #16  
Old 07-15-2013, 07:36 PM
maroon1991 maroon1991 is offline
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Quote:
Originally Posted by DavidNJ View Post
Two questions:

1) How did a nail create a big hole? Usually nails get make clean punctures that are easily patched, especially if the tire never went all the way flat, which is common.

2) Why did you have to replace all 4 tires? At 16k miles, I imagine your tires may have had 50% of their life remaining. Even if the tread depths would have been different, couldn't the replacement just have been trued/shaved down to the same height?

http://blog.tirerack.com/blog/todds-...an-awd-vehicle

http://blog.tirerack.com/blog/motors...e-at-tire-rack
The tire was pretty flat, but still supported by the sidewall. After the initial pop from the puncture, I heard a second bang aways down the road, which was the nail flying out of the tire. It must have been at least 1/2" wide because it left a big hole in the tire and a huge divot in the wheel well where it struck. In terms of changing all 4 tires, every dealer I talked to recommended all 4 be changed due to it being an xdrive. I've heard the same thing on discussions about changing 4 vs 2 tires for AWD cars and SUVs in general.
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  #17  
Old 07-15-2013, 08:46 PM
DavidNJ DavidNJ is offline
Just Confused...
Location: Warren, NJ
 
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Quote:
Originally Posted by maroon1991 View Post
The tire was pretty flat, but still supported by the sidewall. After the initial pop from the puncture, I heard a second bang aways down the road, which was the nail flying out of the tire. It must have been at least 1/2" wide because it left a big hole in the tire and a huge divot in the wheel well where it struck. In terms of changing all 4 tires, every dealer I talked to recommended all 4 be changed due to it being an xdrive. I've heard the same thing on discussions about changing 4 vs 2 tires for AWD cars and SUVs in general.
Note for next time: measure tread depth, order the tire shaved to that depth. One tire plus $35.
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  #18  
Old 07-15-2013, 10:28 PM
kk22 kk22 is offline
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Quote:
Originally Posted by DavidNJ View Post
Note for next time: measure tread depth, order the tire shaved to that depth. One tire plus $35.
Good to know, thanks David.

I'm on 18s and only have a couple of thousand miles on mine but have hit some nasty Chicago potholes in the rain. Though for sure i'd need replacement but thankfully everything is still OK.
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  #19  
Old 07-17-2013, 09:04 PM
Andrew OD Andrew OD is offline
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No problem in 45k
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