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KEEP M3POST ALIVE BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER LINK! |
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10-31-2009, 02:42 AM | #23 | |
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10-31-2009, 05:42 AM | #24 |
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I've taken the RFT's off the Mini and off the Sienna, and I would have taken them off the M3 too if they had forced me to. The M mobility kit is great unless you shred one in a pot hole.
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10-31-2009, 08:44 AM | #25 | |
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And, I am still wondering about the RFT tech used by the X5/X6 M. Is it similar to the Bridgestone tech, or the same/similar to what is being used on the rest of the BMW lineup? I guess I should google and find out about the OEM tires on those vehicles. |
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10-31-2009, 09:21 AM | #26 |
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Whats the M Mobility Kit ? What comes in it + how much is it ?
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10-31-2009, 09:26 AM | #27 |
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It's the goo in your trunk and standard with your M
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10-31-2009, 09:34 AM | #28 | |
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10-31-2009, 10:23 AM | #29 |
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My 08 18inchers came with RFT's and I only got approx 25,000 miles on them. I replace them with regular and purchased a tire repair kit with a compressor.
Cost to replace the two rear tires was nearly $1,000.00 out the door.
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10-31-2009, 10:38 AM | #30 |
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Bit off topic, but I was in the dealers the other day looking at the new 5 Gran Turismo, they had an X5M and an X6M there as well. All of them had runflats. Those tires were huge 20 inch 285,275,245, all staggered setups.
When I had my E90 330i with RFT's I could find no-one to repair them. I'd hate to be forking out the price of a 20 inch 285 RFT plus install, every time I had a puncture. Makes the wheel/tire insurance look like a good deal now. I hated the runflats on my e90 330i, they were noisy and hard. The car would hop all over the place on rough pavement and they had horrible grip in the wet. I even got a set recalled because of excessive road-noise. In the 3 years I leased I went through 11 tires, Original set, recall set and 3 punctures. |
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10-31-2009, 10:50 AM | #31 |
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The M3 does not come with RFTs because at the time of launch there was not a tire that was sticky enough to meet BMWs requirements. The X5/X6 ///Ms were not going have them either except that BMW achieved better performance with them than the non-rfts.
While many people will complain that they have less performance that may not always be the case- steering is actually more precise as is cornering secondary to the stiffer sidewalls (same reason ride is harsh). Independent tests showed this in the past. The next generation is said to greatly improve in harshness. Many performance cars are going to the RFTs- that being said it is nice to know if you have a blow out you are not going to lose control of the car thanks to the RFTs (I ran over a knife blade setup to pop a tire once (have to love metro NYC) at a good amount of speed and the tire lost pressure real fast- without the RFTs I would have been toast, not to mention in not such a great area. I think they were rushed a bit and have no choice but to get better. The PS2s on the M3 are great and I am glad we did not need to beta test RFTs but at the same time I wish they were RFTs for the safety aspect. There is some indication MINI may ditch the RFTs on the next generation but nothing has been finalized. If Audi can make one of those folding spares and keep the weight down I am sure BMW will find a way.
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10-31-2009, 09:08 PM | #32 |
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Some questions:
1.-What would assist do? repair the tire for you? give you a temporal one? 2.-IN order to use a repair kit, you need to take out the wheel. The M3 doesn't come with the needed tools. |
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10-31-2009, 09:20 PM | #33 | |
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2) Many of us buy small jacks and carry the necessary tire changing equipment. The E46 jack works, is very small, and readily available cheap on eBAY. Using the M Mobility Kit goo makes it difficult to re-use a tire that may just have a simple, and easily fixable puncture. See kit below, which fits in a small carry-bag:
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11-03-2009, 08:29 PM | #35 | |
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11-03-2009, 09:36 PM | #36 |
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I had an 07 335i coupe for three years (lease) before I bought the M. IMHO rft's are the biggest pos tires you can put on a vehicle. The ride sucks, if you pick up a nail in the tread the dealer wont repair them, and I wont even get into the blown sidewall every time you hit a pot hole. If I had purchased that car, the run flats would've stripped off immediately.
It's been a pleasure driving the M since day one, sans run flats. EDC or not, it's a much better riding car. Go figure.
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11-03-2009, 10:19 PM | #37 | |
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11-04-2009, 10:49 PM | #39 |
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Runflats, such as the Bridgestones that came as standard equipment on my 2001 Z8 are inferior to PS2's and comparable equipment. In fact, I replaced the RF's with PS2's as soon as I picked up the old classic. Some sidewall flex is a good thing, for normal driving, and can be of some advantage on the track. Be happy if you have never dealt with RF tires.
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11-05-2009, 10:28 AM | #41 |
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My 335 with Sport Pac came with 18" RFT. After my first drine on concrete road at 80mph I decided to sell the car. Tha's how bad it was. Then after some searcg I realized it was due to RFT tires. I replaced them with 19" non RFT. The ride completely changed. Much quiter, smoother and much enjoyable...
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11-05-2009, 11:27 AM | #42 | |
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I think runflat is good for safety. imagine a puncture at highspeed. |
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11-05-2009, 01:16 PM | #43 |
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I have fun flats on my new 750li. Worst thing about the new car. Feel greasy and harsh.
They might be more convenient, but that is offset by the cost and poor overall performance. |
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