Last post on Apr 21, 2013 at 12:52 PM
You are in the BMW 3-Series
What is this discussion about?
BMW 3 Series, Tires
#2699 of 3108 Re: noisy [shipo]
Nov 15, 2010 (1:50 pm)
shipo, How does the inflate in a can concept work anyway?
Specifically, I would think there would be two problem scenarios: 1) where the puncture is big or where the puncture is in the sidewall - a can of foam does not seem like it could repair the tire and you would have to get the car towed. 2) In long journeys in rural areas (as described above in the post about Nevada). How many miles does that foam last?
For instance on Highway 395 in eastern CA, you probably cannot get a BWM tire in the 500 miles in between Santa Clarita and Reno. So you would have to wait in say, Big Pine or Lone Pine or Tom's Place a few days (certainly till Monday) for a garage to get it.
Not that I don't like Big Pine but....
#2700 of 3108 Re: I'll Pass for Now and Wait [capriracer]
Nov 16, 2010 (3:32 am)
I'm sorry, but it seems my post is being mis-interpreted.
I am NOT saying there aren't problems, I am merely pointing out that many of the complaints aren't caused by the tire's ability to operate without inflation pressure. For example, rapid treadwear is the result of the tire being a high performance tire with a tread cpompound being selected for grip rather than wear. Also, irregular wear is caused by BMW's camber spec.
Put another way, if BMW were to discontinue the use of RunFlat tires, the rapid wear and irregular wear complaints would not be solved.
I hope this clarifies things.
#2701 of 3108 Re: I'll Pass for Now and Wait [capriracer]
Nov 16, 2010 (4:03 am)
What a shame that such a good car should be stuck with such a potential problem. I will be buying a new car in the next few months, and the RFT are a deal breaker for me.
If I am up in the North Georgia mountains, or have a flat headed for the Gulf beaches cutting across Alabama, I will be there for a while.
Sorry BMW, you are out of the running for my next vehicle.
There is no chance the Germans will backtrack on their decision to go to run flat tires.
#2702 of 3108 Re: noisy [edwardsf]
Nov 16, 2010 (4:40 am)
The inflate in a can product can pretty much refill a tire and stop the leak unless it is a catastrophic puncture (very rare, so rare in fact that in my million and a half miles of driving I've never had one). As for how long it lasts, as far as I know, it isn't a "foam" per-se, but a latex sealant that hardens; it will supposedly last for a very long time (like a thousand miles or more), long enough to get you out of the desert and then some.
The downside of course is that you will typically need to either repair the TPMS sensor or replace it after usage of the sealant; however, given the cost of replacing one or more RFTs versus the cost of repairing/replacing GFTs, you'll still be ahead of the game if you buy a new TPMS sensor after each use of the sealant.
#2703 of 3108 Re: I'll Pass for Now and Wait [capriracer]
Nov 16, 2010 (4:51 am)
"For example, rapid treadwear is the result of the tire being a high performance tire with a tread cpompound being selected for grip rather than wear. Also, irregular wear is caused by BMW's camber spec."
If what you say is true then why have many BMWs with long lasting All-Season RFTs also trashed their tires in short order, and why, when said RFTs are replaced by GFTs of the same type, do the tires last a long time and not get noisy in the process?
"Put another way, if BMW were to discontinue the use of RunFlat tires, the rapid wear and irregular wear complaints would not be solved."
I completely disagree; I've had two BMWs equipped with GFTs, one with all season tires and one with summer performance tires. The car with the all seasons was turned back in at lease end with 45,000 miles on the clock and the original factory tires were still going strong; I was able to project at the time that those tires were going to see the far side of 60,000 miles before they needed to be replaced.
The second car was turned back in at lease end, also with the factory tires on it; however, given the fact that I had moved to New Hampshire and needed to buy a set of winter wheels and tires, the factory tires only had about 20,000 miles on them. That said, 20,000 miles on summer tires is not too bad, especially when the worst of the four still had 6mm of tread depth (the BMW-FS minimum tread depth is 5mm).
I submit that not only does the RFT design contribute to rough riding and skittish handling, it also contributes to accelerated and irregular tire wear that causes the tires to get noisy and to be replaced much sooner than if the tires on the car were GFTs.
Nov 17, 2010 (9:31 pm)
1. Were you losing air pressure in the tire to lead to the cracked wheel diagnose?
2. Was this from dealer or indie shop?
3. Did you recall hitting something for the 2 days you had DWS?
4. Was there vibration that caused to diagnose bent wheels?
5. Could the bent wheels existed from previous tire set?
7. How many miles on the car?
#2705 of 3108 my 2nd set of Conti RFT has over 60k miles on them
Nov 17, 2010 (9:35 pm)
Thread is still good but noisy. My 1st set thread was low and replaced at 36k miles.
#2706 of 3108 Re: noisy [Firebird_EOU]
Nov 18, 2010 (4:57 am)
I wasn't losing any air even thought the rim was cracked. I hit a hole on a main street where I live and when I kept a previously schedule appointment with my dealer to check my tires for the problem with excessive noise and a harsh ride they found no problems with the tires but they refereed me to BMW customer service in New Jersey who refereed me to the law firm that handled the tire class action. The case was closed. But my dealer said they would give me a 50% discount on a set of tires if i agreed to buy a new 528.
I took the car to Firestone and guess what, they found a bubble in the wall of on of the tires. I had them put a new tire on but they didn't notice the crack either. 5000 miles later when I bought the DWS set they noticed the bent rims but not the crack. I drove home and returned the next day for a rebalance because the tech? felt balancing a wheel down to .25 was good enough. At this point after spending $625 for tires, $189 for alignment and $15 for tips they didn't want to mount a tire on the cracked rim. Safety issue I was told. I ordered a jack set and 3 wheels to replace 2 bent wheels a the cracked one and had the job redone by a very reputable shop in my area. Now the car rides so smooth and so quite I can't believe it. Also the walls on the DWS's don't flex so the handling is just as the rfs tires. I was considering a 2011 525 but ater 2 bmw's with rft's, I have had enough. Maybe a Lexus. Oh well, time will tell. Car is a 2009 335ix bought in October of 2008 with 26000 miles. The noise and hard ride started at around 5000 miles. The dealer didn't know anything.
#2707 of 3108 Re: I'll Pass for Now and Wait [dohrmc]
Nov 18, 2010 (12:14 pm)
BMW RUN FLAT TIRE
BEFORE YOU ARE GOING TO PURCHASE A BMW, BE AWARE THAT THEY COME FROM FACTORY WITH RUN FLAT TIRE, THAT MEANS THAT YOU DONíT HAVE A SPARE TIRE IN YOUR CAR SO YOU HAVE TO PAY EXTRA APPROXIMATELY $ 27 A MONTH ON YOUR LEASE OR FINANCE FOR A TIRE INSURANCE AND THE DONíT TELL YOU ALL THAT I MENTIONED BEFORE UNTIL THE LAST MINUTE THAT YOU ARE ABOUT TO CLOSE THE DEAL, BMW SAYS THAT THEY USE THOSE TIRES FOR SAFETY REASON, BUT FOR ME THAY ARE A NIGHTMARE BECAUSE THEY ARE SO SOFT THAT THEY DONíT LAST LONGER THAN ANY OTHER PERFORMANCE TIRE AND THEY GET FLAT VERY EASY, THATíS NOT ALL WHEN THEY SELL TO YOU THE CAR THEY SAY THAT IT IS VERY EASY TO CHANGE THE TIRE IF THE RUN FLAT, YOU JUST HAVE TO SHOW UP AT ANY BMW DEALER AND THEY CHANGE YOU THE TIRE FAST, WOW THAT SOUND GREAT!, BUT IT IS NOT LIKE THAT, ONCE YOU SHOW UP AT THE DEALER YOU HAVE TO DROP THE CAR FOR A DAY BECAUSE THEY HAVE TO CONTACT THE INSURANCE INSPECTOR TO GO BY THE DEALER AND INSPECT THE TIRE AND YOU HAVE TO BE LUCKY IF THE AGREE TO PAY FOR IT, AND ALSO YOU HAVE TO BE LUCKY IF THE DEALER HAVE A LOANER, IT HAPPEN TO ME THREE TIMES SO THIS IS NOT CASUALTY, SO YOU SPEND TWO OR THREE DAYS OF YOUR WONDERFULL LIFE JUST TO CHANGE A TIRE, WITH OTHER TIRE YOU JUST HAVE TO GO TO ANY TIRE STORE AND THEY FIX IT FOR YOU IN 30 MINUTES.
WORLD GREEN CAR AWARD 2008
BMW WON IN 2008 THE WORLD GREEN CAR AWARD, THATíS IRONIC, BECAUSE THE RUN FLAT TIRE DO NOT ACCEPT REPAIR SO IT DOESNíT MATTER IF THE TIRE HAVE 3 OR 1,000 MILES ON USE AND GET FLAT THEY HAVE TO DISPOSE THE TIRE AND EVERY BODY KNOWS HOW CONTAMINANT FOR THE ECOSYSTEM ARE THEM AND IT DOESNíT MATTER THAT SOME ARE RECYCLED.
IN THE OTHER HAND STANDARD TIRES CAN BE REPAIRED AND LAST LONGER AND YOU DONíT HAVE TO DISPOSE THEM BECAUSE THEY HAVE A LITTLE NAIL ON IT, THAT CAN BE REPAIRED AND YOU CAN ENJOY THEM FOR THEIR LIFE SPAM.
#2708 of 3108 Re: I'll Pass for Now and Wait [vvazquez]
Nov 18, 2010 (3:02 pm)
Dude, take a chill-pill, STOP FRIGGIN' YELLING (it's rude and difficult to read), and then scan the over 2,700 posts in this thread. What you're upset about is ancient history.