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Sedans BMW 3-Series BMW 3-Series Run Flat Tires
2420 messages, Last post on Nov 29, 2009 at 8:10 AM
You are in the BMW 3-Series Forum. Your Hosts are pat & karens
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Replying to: bmwr (Oct 09, 2007 12:52 pm)  Guys in the UK have had 'total' sidewall failures on RFT's within 20 miles of running low pressure. All depends on the load being carried and for how long the pressure was dropping, before the warning is thrown up. HighlandPete
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Replying to: highlandpete (Oct 10, 2007 8:38 am) Guys in the UK have had 'total' sidewall failures on RFT's within 20 miles of running low pressure. All depends on the load being carried and for how long the pressure was dropping, before the warning is thrown up. Here is what my 3-series manual says. Do people disagree with this? The manuals in general tend to be conservative about this stuff, right? "In the event of complete tire pressure loss, 0 psi/kPa, you can estimate the possible distance for continued driving on the basis of the following guidelines: - With a light load: 1 to 2 persons without luggage: approx. 155 miles/250 km. - With a medium load: 2 persons, cargo bay full, or 4 persons without luggage: 90 miles/150 km - With a full load or when towing a trailer: 4 or more persons, cargo bay full: approx. 30 miles/50 km"
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Replying to: dan12 (Oct 10, 2007 10:32 am) Regards, OW |
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Sorry about this, but what does GFT stand for? I get the idea it must be conventional tires?
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Replying to: 2puttmax (Oct 11, 2007 7:38 am) Regards, OW |
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Replying to: 2puttmax (Oct 11, 2007 7:38 am) Best Regards, Shipo |
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Replying to: dan12 (Oct 10, 2007 10:32 am) "So I am driving along the M11, everything seems fine, beautiful sunny day in fact. All of a sudden I get the DING! warning from I-drive that one of the tyres has a puncture. No problem I thought - still got another 90 miles or so on them, albeit at a snail pace 50 mph. A couple of miles later, I arrive at my destination. I go for a quick inspection, and all the tyres look perfect, no problems so far. Fifteen minutes later, I'm back on the M11, heading back to London, and the car is horrendously unstable. The steering is completely off-centre, vibration through the body/seats/s.wheel is very bad, and the car is weaving all over the place - this is at LESS THAN 50 mph. I decide to call BMW Assist, who just tell me what I already know, "They're good for another 90 miles at 50mph". However, I refused to take their advice - I just pulled up on the hard shoulder, called BMW Mobile Service, and was towed home an hour later. Yesterday I had it towed from my house to the local dealers. I just thought of it as a straightforward simple job - change the tyre, Bob is your uncle. How wrong I was... The (not-very)run-flat tyre was completely disintegrated on the inside. The tyre's beading had become so hot, it welded itself onto the rim. BMW Service said they would try and get it off, so long as I accepted liability should they bust the rim. Thankfully the very able technician was able to get it off without damaging the rims. However, the tyre, in its last moments, must have rubbed against the suspension dust cover, leaving a big gash in this flimsy plastic part. And now, the dealers want 3 hours labour to remove the suspension shock, and put a new plastic cover. Moral of the story......You cannot drive 90 miles at 50mph on these things - NO WAY. From no more than 20 miles on flat, the tyre not only scorched itself, but tried taking my shock away with it.... Even with RFT's, I WANT A SPARE WHEEL. HighlandPete
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Replying to: highlandpete (Oct 11, 2007 2:01 pm) Brothers and sisters, gimme an Amen and a Halleluia. Right on Pete.  Best Regards, Shipo
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| In August my BMW dealer here in CT graciously changed all 4 of my Bridgestone EL42's for the Continental RFT's as per the BMW TSB. At first the Conti's were a huge improvement - smooth and quiet compared to the EL42's. Now with only 2000 miles they have become increasingly noisy and rough. I have checked the pressure and then had them balanced with no improvement. To say the least I'm a bit disappointed and will keep you updated. | |
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Replying to: shipo (Oct 11, 2007 2:42 pm) Having said that, I would have PAID EXTRA to have my 3-series come with a spare. I have read that bmw decided to ditch the spare in order to have better fuel economy numbers. I think they could have still done that if they had offered the spare as an option. My only complaint then would be that a simple flat can cost me $300. But at least I wouldn't have to be paranoid on long trips about getting stranded. Oh, well. The car still rocks. Dan
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