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BMW 3-Series Run Flat Tires

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Comments

  • circlewcirclew Posts: 8,401
    Pressure is pressure. Nitrogen is just air minus oxygen. It's an inert gas an just costs more because of the cost od filtering our the oxygen.

    Regards,
    OW
  • shiposhipo Posts: 9,152
    Cannot say that I've ever seen any conclusive evidence that suggests that nitrogen is any better or less volatile good old free air when it comes to automobile tires. Me? I'll use air and check the pressure often. ;-)

    Best Regards,
    Shipo
  • webby1webby1 Posts: 209
    Agree...therefore less chances for under - inflation.
    The risk of under - inflation, which stresses tires by causing their sidewalls to flex more and the air temperature inside to rise.
    I suppose in areas where the temp fluctuates a lot it makes sense to use Nitrogen.
    Regards,
    Webby
  • circlewcirclew Posts: 8,401
    Check this out.

    The first automobile to use air-filled tires was a race car built by André and Edouard Michelin in the early 1890s. More than a century later, the French company founded by the Michelin brothers is so identified with pneumatic tires that its mascot, Bibendum, is a man made of little else.

    Now, after decades spent persuading the world to ride on air, the company has begun work on an innovation that could render the pneumatic tire obsolete. Engineers at Michelin's American technology center are working on what they call Tweel, a combined tire and wheel that would not go flat
    because it contains no air.

    link title
  • designmandesignman Posts: 2,129
    I kind of look at it like bottled water.
  • Hi there,

    So glad I found this forum, I have a 06 330i (no sport package) bought in July 2005, have 17500 miles on it. Did notice some noise after a year, but didn't pay attention. Now the tire pressure monitor warning came on lately, sure enough the tire pressure is low, and I'm going to the dealer tomorrow. Any advice on dealing with the dealer or the tire manufactor? The SR at the dealer told me that RTF are fixable, but tire shop people told me otherwise? Has anybody successfully got replacment tire for free from the dealer or Bridgstone? Would getting non-RFT tires void my BMW warranty?
    Thanks in advance!

    David
  • owner6owner6 Posts: 89
    My free from dealer second set of EL42 RFT's goes bad. I have 16,000 miles on my second set of Bridgestones. I rotated at 5K, Rotated and balanced at 10 K and 3rd rotation at 16K. They have been noisy from about 13 to 16K. Not as loud as the original set. However the inner and outer edges are cupping. My local Tire dealer says I have about 8K miles left however the cupping may require a new set at 21K. I have maintained the Air per dealer and yellow sticker on my door at 29PSI Front and 36 Back. This is a 2006 330i non sport package. i am really #$%^ off at BMW for subjecting me to this dilemma, Ruining an otherwise great car ownership experience. I am seriously considering a 2008 Mercedes Benz.

    However I need to start deciding what I can do in the interim. The Contie tires seem the answer however the last post response person only had 700 miles on them. Can everyone who switched to a replacement to the EL42 RFT please respond with your tire, make model, current miles and noise experience.
    Owner6.
  • circlewcirclew Posts: 8,401
    6,

    The treadwear on the el42 is 300 which means a rating on about 22,500 miles. If you drive like there is an egg under the accelerator, you could probably stretch it to 28 - 30K.

    The conti's are rated at 400 tread wear or about 30 K. Typically performance tires do not have high tread life since they are made to stick better and thus wear more.

    You might want to go with these and winter rft tires which will give you more winter traction and extend life to the fair weather tires.

    Regards,
    OW
  • lipplipp Posts: 58
    Read my UPDATE. Message #643.
  • circlewcirclew Posts: 8,401
    lipp,

    Thanks for the info. Do you you have any visible cupping or signs of wear?
  • lipplipp Posts: 58
    No cupping and no signs of abnormal wear. I didn't actually "measure" tread depth but it looks and feels (by hand) to be extremely close to original....showing minimal wear.
  • circlewcirclew Posts: 8,401
    Thanks, again. I think we have at least some comfort that the advice of some of the dealers was accurate. I still wonder why some of the '07's have the EL42's on them. It makes no sense to me.

    Regards,
    OW
  • circlewcirclew Posts: 8,401
    Does anyone have these tires?

    Zero Pressure™
    Michelin Zero Pressure™ The tire that can survive without air.
    Run flat tires for ultra high-performance vehicles have been around for years. But the real engineering feat was to develop a tire with run flat capability that fit on sedans and coupes. Always up for a challenge, Michelin developed the Zero Pressure™ tire. This unique system is designed to fit on cars like Mercedes, BMW, and Honda Accord. Even with a hole the size of a golf ball, the Zero Pressure™ tire will allow you to drive up to 50 miles at 55 mph. Never get stuck on the side of the road again.

    Even the best car in the world can be a little better.
    It's a fact. Any tire can be punctured. But if it happens when you're driving on the revolutionary new Michelin® Zero Pressure™ radials, you can keep on driving up to 50 miles at 55 mph. And the Low Tire Pressure Monitoring System alerts you to the problem before it's too late. You and your family stay in the security of your car, not by the side of the road waiting for help.

    Backed for your satisfaction.
    With Michelin Zero Pressure™ tires, Michelin not only enables you to drive to get service after air loss — we also let you drive away satisfied after getting that service, thanks to our exclusive "ZP Assurance Plan." If your tire becomes unserviceable during the first two years of service or before 50% of the tread is worn whichever comes first, Michelin will replace the tire FREE OF CHARGE. You'll find full details and conditions of the "ZP Assurance Plan" in your Michelin Zero Pressure™ tire owner's manual and limited warranty.

    Features and benefits of Zero Pressure™ tires:

    * Special crown modifications provide positive handling and vehicle control even during zero-pressure driving.
    * Sidewall reinforcement of low hysteresis rubber provides self-supporting strength at zero-pressure, helps combat sidewall damage, and maintains cool temperatures to allow longer zero-pressure driving.
    * Special bead design helps tires stay securely seated on conventional rims even at zero-pressure
    * Tire pressure monitoring system informs driver of pressure loss to promote proper pressure maintenance and timely tire repair. System installation and use is mandatory; Michelin has approved several systems to give you a choice.
  • circlewcirclew Posts: 8,401
    Bridgestone Wins!

    link title
  • nkeennkeen Posts: 316
    But that would be the Turanza ER300 for the UK market, not the EL42 all-season sold in the US on the base suspension 3-series? Correct me if I'm off track, but I think that the EL42 (unlike the RE050A), in both RFT and non-RFT forms is a North America-only tire. This may be true of most if not all all-seasons. Speed ratings are also higher on UK market cars, and top end chip cut-outs reflect this. 325i ES in UK is limited to 155 mph (corresponding US market 328i with ZSP is limited to 150 for some reason); 335i base with all-seasons in US is limited to 130.
  • circlewcirclew Posts: 8,401
    That is correct. It is the ER300. The EL42 is a separate model. The point is, why was the EL42 used on the 3'ers bound for the states and still is? As we all know on this board, problems showed up quite early and it seems that the rubber compound is extra soft on the treads leading to the cupping. I believe the inner/outer shoulders are wearing faster due to this. I've read that the softer tread rubber is used to mitigate some of the stiffness due to the SSR (Self Supporting Runflat) sidewall structure.

    However, the SR at dealer stated they changed rubber compounds last July for the EL42, no doubt from the feedback.

    Regards,
    OW
  • igglesiggles Posts: 11
    Has anyone tried the Michelin Exalto A/S, either on the E90 or another car? I decided to change to non-RFT's for my 2006 325i, and this has gotten good review at Tirerack. Any opinions are appreciated.
  • I became bimmer owner having leased a 98 528i. I loved the car, but it was way underpowered given the overall weight of the car. So when the lease was up, I moved to an 01 330i SP sedan with a stick shift. It was a great car, but slid all over the road in God's country. I purchased some Bridgestone Blizzak's for all four corners and was fine for the most part, but did manage to get stuck twice and had to be towed out of the snow.

    Got rid of that and am running my current 04 325xi with Continental Conti's M&S that came with the car. While they are overall pretty good, I still used the Blizzaks in the winter and went to the Goodyear ultra high performance F1 D3's in the summer and they are OUTSTANDING on wet and dry surfaces only.

    Long story now getting short, lease is up next month and as much as I love the car, I will probably let it go off lease, primarily because I want a car with more than the standard 185hp the car came with. Plus the residual to buy it is too high as far as I am concerned.

    In the meantime, I have had a chance (for normal maintenance and bad stater) to drive an 06 325i, an 07 328xi and an 04 330xi. All had steptonic tranny and no SP
    The 04 also had the PP.

    In any event I loved the 04 330xi the best out of all three cars. Best ride, best handling and best speed. It had GFT unlike the 06 & 07 which had the RFT.

    I have been debating a long time about what to do about my next car. But after having read this blog's comments, I will not be buying/leasing a new one any time in the near future because of all the issues of the RFT. When I first heard they were going on the new E90, I had concerns about them for all the reasons in these posts. So I Have decided I will wait a few months before I do anything because of the RFT.

    I can tell you this, I had a problem with the salesman who sold me my last one. He lied about important economic aspects of the deal the big one of which that BMW NA/USA had a lease pull ahead program and the last 3 payments on 01 would go away. Turns out there was no such program at corporate level and the dealer ended up eating my last 3 payments.

    Well I was quite ticked about the whole mangled process, so I got on the internet and tracked down the names of about 8 of the top guys at BMWNA and wrote them all a three page letter about my experience with the dealer and cross copied everyone of them so no one could deny they received it.

    That got their attention and they eventually got my dealer to pay the last 3 payments. And the sent me a bunch of BMW paraphenalia as a goodwill gesture on their part. But it didn't changed my signed lease any.

    The point being while I think their service dept means well, ultimately if the dealer reaches his quoatas for the year, then you basically don't exist and there is nothing they can or will do about a problem you have but they won't admit to. The salesman who screwed me is now selling mortgages.

    So I will not be leasing a new bimmer for a while anyhow until the RFT issue is resolved. I may just check out the 04 330xi I was driving to see of its availablity with GFT's. Engaging in a letter campaing can sometimes work.

    As another example, I bought one of my son's a Disney theamed telephone (Micky Mouse) from Best Buy and the damn thing litteraly fell apart on my son with in about 3 weeks. I took it back to best buy to ge my money back and the manager told me she couldn't do that for a couple of reasons: One it had been purchased more than 30 days prior to when I brought it in, so they couldn't help in that regard. (It was a Christmas present bought in Nov They also accused my son of abuse. That was patently false and finally, I didnt' buy the extended warranty so I was out of luck 3 ways. I didnt'by their damn extended warranty which would have cost more than the phone. I don't expect it to die within 30 days. Just like AT hard drives completely fail after two year (i have had that happen 3 time to me already).

    Well I found names of the 8 or so top company guys (not hard to find for a public company. You can find their 10Q and 10K filing with the SEC on the web which discloses this stuff) and wrote them a letter and cross copied to one and all.

    With in a few days there a knock at my door. A Rep from Best Buy headquarters, stopped to give me a fruit basket along with a couple hunderd dollars of coupons and their sincerest apologies; They assured me they don's operate that way and as a gesture of good will, that was their token to keep me customer. Fact is I still shop there (mostly because they are the only game in town). The bad manager is still there however.

    Conclusion, I don't see myself buying/leasing an 06 or 07 3 series until the RFT issue is resolved and two, squeeky wheels somtimes do get the grease. I would love to see the number of return customers that didn't come back because of the RFT and BMW or the dealer to fix it.

    Hope this little insight helps.
  • suj1suj1 Posts: 2
    I am planning to get a new car and the 2007 328i (non sports package) tops my list. I have test drove other cars but I like how the 328i drives and looks. After looking around I found out that 325 and other BMWs have problems with the Bridgestone RFTs. Does the 2007 328i come with the same Bridgestone tires that have problems? Are other RFTs better than the Bridgestone? Does anybody with a 328i experience problems with the RFTs?

    Thanks for any feedback.
  • nkeennkeen Posts: 316
    I was going to buy the 325i with std suspension but the salesman insisted: "You need to drive the sport suspension again." We took a longer drive that time, tossing the car along twisting country roads. I was sold. If you live in the snow belt and can handle the winter tire swap, give it serious consideration. On smoother southern roads, I couldn't imagine going any other way.
  • circlewcirclew Posts: 8,401
    I have seen the EL42 Bridgestones on the '07 328i. The dealer said that Bridgestone changed the rubber compound in July to mitigate the problem on the delivered '06 cars. I had a noise problem and they changed my tires at 12K miles to Continental Contact Pro SSR tires.

    The feedback on the Conti's is good so far. Hope this helps.

    Regards,
    OW
  • suj1suj1 Posts: 2
    Thanks for the feedback.
    What kind of mileage can I expect out of the Continental Contact Pro SSR tires? Does anybody know if non-RFTs are used if that voids any warranty by BMW.
  • Using normal tires does not impact your warranty in any way.
  • circlewcirclew Posts: 8,401
    Blue,

    Are you real sure about the warranty with GFT's?
  • waiwai Posts: 327
    I have put Exalto A/S on my wife's Taurus Wagon, it handles pretty well if you don't drive too aggressively. If you full throttle from the start, the tires will lose traction a little bit. My friend's BMW 528 after put it on said its pretty good for her wife's driving style.
    There is better tires than this one eg. Pireli's Pzero Nero M/S. this one also has a RF version.
  • As long as you put the correctly sized tires on the car, BMW can't possibly deny your claim. If getting non-oem tires allowed BMW (or any manu) to deny warranty claims then customers would be held hostage to the brand and style placed on the car at time of purchase. Hell, tire companies would line up to be THE OEM of choice for expensive models as that would guarantee 2-4 years of sales to that manufacturer's clients.

    Ever looked at your sales sticker? do you see any notation about the precise brand and model of tire on your car? No. They can't even prove if the car was delivered to you with GFTs, let alone Bridgestones or Contis.
  • circlewcirclew Posts: 8,401
    Blue, you are correct. Thanks.

    I checked the warranty and no wording in there voids it based on tire choice. The manual has recommendation of rft's but no wording about any voiding if GFT are used.

    Regards,
    OW
  • shiposhipo Posts: 9,152
    "Hell, tire companies would line up to be THE OEM of choice for expensive models as that would guarantee 2-4 years of sales to that manufacturer's clients."

    Check out the Honda Odyssey Touring. All "Touring" models come with the Michelin PAX system, and the only place where you can have them repaired or replaced is either at a Honda dealership or an authorized Michelin dealer. Yikes! :P

    Best Regards,
    Shipo
  • webby1webby1 Posts: 209
    My dealer indicated that it will void the warranty...one of many reasons I am keeping my 2004 330I.
    Regards,
    Webby
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