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      11-05-2012, 09:06 AM   #23
Pacemaker1000
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Just checked and I have the newer/modified wheels
Does this mean I am exempt from cracking?
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      11-05-2012, 09:51 AM   #24
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Quote:
Originally Posted by Pacemaker1000 View Post
Just checked and I have the newer/modified wheels
Does this mean I am exempt from cracking?
Desirable...
BMW changed the rim's design to remove the cracks.

IMO, 296 wheels are quite easy to crack, but new shape is introduced to achieve a stronger wheels.
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      11-05-2012, 10:04 AM   #25
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Best advice I can offer is "if you drive an sDrive Z4 e89 then stay clear of 296 wheels, if you now have them then change them. For one day when you least expect it in some small town the TPM light will light up and what you will find is a cracked rear rim"

Should this happen to you then be prepared to spend at least 2 days in the small town motel waiting for replacement rim(s) and tire.
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      11-05-2012, 10:34 AM   #26
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Quote:
Originally Posted by teog60 View Post
Desirable...
BMW changed the rim's design to remove the cracks.

IMO, 296 wheels are quite easy to crack, but new shape is introduced to achieve a stronger wheels.
Fingers crossed then. I guess I am better off than some
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      11-05-2012, 11:34 AM   #27
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Quote:
Originally Posted by Pacemaker1000 View Post
Just checked and I have the newer/modified wheels
Does this mean I am exempt from cracking?
Only time will tell.

I've had one front and two rears go, all have been replaced recently and they're not the new design, so there are still plenty of old style wheels being refitted. One day I'll get something else but for now I'm saving pennies and loving the look of the wheels.
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      11-05-2012, 11:37 AM   #28
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If another of mine crack I will insist on the new design as replacements.
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      11-05-2012, 12:22 PM   #29
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Quote:
Originally Posted by Pacemaker1000 View Post
Just checked and I have the newer/modified wheels
Does this mean I am exempt from cracking?
At the moment BMW has not stated that they have reinforced the new wheel. So time will tell.

The history keeps repeating: http://www.z4-forum.com/forum/viewto...p?f=23&t=43990

Last edited by zEdP; 11-05-2012 at 12:38 PM.
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      11-05-2012, 01:52 PM   #30
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so far have not seen any report of the modified wheels cracking
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      11-05-2012, 02:15 PM   #31
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damn just checked and i have the older type albeit without any cracks

looks like an easy way to check from the front is that there is no dip towards the centre in the modded ones, they are flat
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      11-05-2012, 02:23 PM   #32
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Quote:
Originally Posted by Pacemaker1000 View Post
so far have not seen any report of the modified wheels cracking
Its too soon, they were only changed a year or so ago... these wheels take a couple of years to fail... you can only hope the new designs are better tho.

Having said that only the rears have been modified. The fronts are still the old design, I know as mine was replaced only a month ago.
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      01-24-2013, 12:09 AM   #33
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Well another set of 296's bit the dust 22,270 miles. Noted a screw laying under rear of the car this morning, looked too new and shiny to be off Z but was taking a glance under to make sure. So I just happen to spot what appeared to be the early stages of a crack on rear drivers side. Pulled it off and sure enough a crack. Figured I better check rear passenger side as well. Surprise, surprise that side has a single crack as well but more advanced. TPM not triggered & tires were still holding pressure @ 36 psi. The hook is on the way to haul it off to the dealer - not taking any chances exasperating the situation. Just inspected them @ 20K miles about 2 months ago with no issue.

Let the fun begin! Hopefully not much of a battle as I have the BMW Tire & wheel Insurance and caught the problem before they deflated and self destructed.

Pasenger Side



Driver's Side



And away she goes

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      01-24-2013, 12:42 AM   #34
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Regardless of whether you have wheel and tyre insurance, they should be replaced under warranty. There is a run out test and a tolerance limit of 2mm on the cracks. I have had 4 296 cracked wheels, and 3 changed free of charge under warranty. BUT...I now have a full set of 326 M Sport alloys, and two rears have cracked, but been replaced under warranty
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      01-24-2013, 12:45 AM   #35
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You guys are scaring me
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      01-24-2013, 01:33 AM   #36
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Quote:
Originally Posted by HerrK View Post
TPM not triggered & tires were still holding pressure @ 36 psi.
Sorry to hear about that!!

was this a front wheel? (guess based on 36psi)
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      01-24-2013, 04:54 AM   #37
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Were these rears the updated design? (there is a new design with what looks like a strengthened inner rim for the rears)
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      01-24-2013, 07:31 AM   #38
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that is absolutely all your fault - nothing wrong with these 296 wheels
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      01-24-2013, 07:58 AM   #39
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Quote:
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that is absolutely all your fault - nothing wrong with these 296 wheels
Indeed.. at least so say BMW. I've never owned a car where the manufacturer has told me to keep an eye on them!
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      01-24-2013, 11:57 AM   #40
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New post on the Z4-forum.com. Guess what...

http://www.z4-forum.com/forum/viewto...p?f=23&t=46889
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      01-24-2013, 01:43 PM   #41
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This is a pretty scary thread, is this for 296 only or are the M light alloy wheels Double-spoke style 326 M 19" also seeing this issue?

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      01-25-2013, 12:54 AM   #42
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Sorry VailM3, I have the same wheels as yours, the 326 M Sports......in the UK we have had 3 wheels crack, two of which have been rears on my car. Bth replaced under warranty. I don't think they crack as hard as 296 wheels as they are forged alloy, and the cracks have been way under the tolerance level
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      01-25-2013, 01:10 AM   #43
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SA called to tell me the insurance agent approved two new wheels which are on order with an ETA tomorrow (Fri). Hopefully will get the new design wheels. RFT's will go in the trash soon as they are down to the last 2K miles or so. I could almost sense the tone that the SA would not have been so amiable without the insurance. Almost like he was disappointed in having to give me the wheels. He gave me a line of BS about the tires being unsafe and hitting the wear bars. Unfortunately for him I know the location and markings on the sidewalls for the tread wear indicators (TWI or Triangle) - Not there yet bud, which shut him up quickly. Remount the RFT's. Michellin PSS soon to be on order. So my initial 5 yr 50K mile @ $1200 Tire & Wheel Investment, has "Paid off in Full" & then some @ $2+K worth of hardware - two new rear tires at ~ 5k miles due to screws, two new wheels, and a total hassle free experience. So no complaints here.

It's just a real pity that it has to be this "insurance way" where owner's can't count on BMW engineering (failure to issue a safety recall), management (cognizant of engineering/supplier problems more concerned with $ loss control than customer satifaction), & the omnipresent accountants and lawyers (who create & defend the corporate $$ greed).
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      01-25-2013, 01:16 AM   #44
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Sorry VailM3, I have the same wheels as yours, the 326 M Sports......in the UK we have had 3 wheels crack, two of which have been rears on my car. Bth replaced under warranty. I don't think they crack as hard as 296 wheels as they are forged alloy, and the cracks have been way under the tolerance level
So is it basically the RFT causing the damage to these wheels + road conditions. Living in Switzerland i have yet to see a single pothole, when u cross to the french side, different story.
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