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Old 02-06-2013, 07:12 AM
psfz4 psfz4 is offline
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Location: Cincinnati, Ohio
 
Join Date: Nov 2012
Posts: 16
Mein Auto: 2004 2.5i Z4
Z4 run flat tires

I bought a 2004 with 19,000 miles that has the original run flats on it. The tread is OK but they are pushing 10 years old, so I am planning to put on new tires. I am new to run flats and have read a zillion threads, which are often conflicting. I don't even understand the concept behind run flats, except that they are an excuse for leaving a spare and jack out of the car. As an engineer, I can't get my mind around a tire that:

1. allows you to drive 50 miles to somewhere when you get a flat.
2.once you get there the tire can not be repaired and must be replaced
3. when you get there, no one is likely to have a replacement or the equiptment to install run flats
4.If the tires have more than slight wear, they should be replaced as a full set?
5. some owners claim that run flats are more likely to get flats than conventional tires?

Am I missing something here?

Thanks in advance for explaing the logic to me.

PS If you put a spare and jack or a slime repair kit in the trunk, how do you tie it down so it doesn't fly around. Is your AAA card a better solution?
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