> The main problem with this and any other E90 3 Series is the RUNFLAT
> TIRES. These tires don't handle well, (notice none of the M cars have
> runflats), wear fast, and will cost you $400 each to replace.
>
> Further, BMW is failure to offer a "spare tire" is obnoxious and
> another reason why I won't buy one of these things!
Hmm. I'm getting 32,000+ miles and great handling out of the OEM
Bridgestone 050A run-flats on my Z4. My local tire shop will replace them
for $250 each including mounting & balancing. My only complaint is that the
ride is not as compliant as it could be, although E90 magazine tests seem to
indicate a good ride with run-flats on the E90.
I would prefer that run-flats were optional, but you can always replace them
with conventional rubber & carry a plug kit. Seems like a pretty poor
excuse for not considering a new 3 series to me.
Tom
SharkmanBMW - 08 May 2006 23:13 GMT
runflats also severely increase damage from pot holes... a friend that works
for mercedes advised that they are stopping their use because of wheel
damage issues
Charles U' Farley - 09 May 2006 01:37 GMT
If you are getting 32,000 miles tread wear, you either drive very gently or
these are NOT performance tires or both. That kind of mileage from the soft
compound used in performance tires just does not happen.
Secondly, that $250 replacement cost is nice until you realize you pay it
every time you get a flat. Then, what is a free repair at most tire shops
becomes a @250 expense. You do the math: free (or at most a few dollars) vs.
$250...every time.
These things are a bad idea vs. even a space-saver spare, but they fall
quite in line with BMW's recent kick (like no dip stick on the E90's) of
assuming their customers hate touching their cars, other than the interior.
>> The main problem with this and any other E90 3 Series is the RUNFLAT
>> TIRES. These tires don't handle well, (notice none of the M cars have
[quoted text clipped - 14 lines]
>
> Tom
It is too bad when a manufacturer makes a vehicle that you probably
would like w/o the run flat and loses the customer because they do not
provide an option of non run flats.
This doesn't bother me because I have the run flats on the Z4 and I have
NOT had a flat. Ask me again after I have gotten a flat!
Imagine getting a flat with less than 1000 miles on a tire.......
My solutions:
Keep a spare in the garage so that I can drive home with the flattened
tire and swap it out. Now I have time to decide to repair/replace the
damaged tire.
Keep a plug kit in the car with a pump. Fix the tire (if possible and
convienent w/o driving too many miles) I have checked with some experts
who think it is possible to plug a run flat.
I have been uneasy about the whole run flat bs, but I have just accepted
it.
> The main problem with this and any other E90 3 Series is the RUNFLAT
> TIRES. These tires don't handle well, (notice none of the M cars have
> runflats), wear fast, and will cost you $400 each to replace.
>
> Further, BMW is failure to offer a "spare tire" is obnoxious and
> another reason why I won't buy one of these things!
AGH! - 09 May 2006 10:11 GMT
Mmm, the run flat debate - again!
Cannot say I notice a ride / handling problem with the run flats, I
have factory fit Continental SSR's.
But then I am one of those people who got tired of DIY car maintenance
years ago and the idea of not having to get out the car to change a
flat in the rain is very appealing, plus there is the safety aspect of
run-flats. Get a blow-out at high speed and it's not hard to keep
control of the vehicle and slow down.
I'm also not interested in "race track" driving, if I wanted (had time
for!) that I'd buy a Z4 or a new M3 when it's available, I'm in an E91.
I need a tire that gives me good all weather performance.
I think BMW have read there market well here. Sounds an M3 with regular
tyres for better "race track" performance is for you.
Fred W - 09 May 2006 15:19 GMT
> Mmm, the run flat debate - again!
> Cannot say I notice a ride / handling problem with the run flats, I
[quoted text clipped - 9 lines]
> I think BMW have read there market well here. Sounds an M3 with regular
> tyres for better "race track" performance is for you.
I hear that the Z4s come stock with run flats. Not sure about the new M3's

Signature
-Fred W
dizzy - 09 May 2006 23:36 GMT
>Mmm, the run flat debate - again!
What I've wondered is what "run flat" people do in the Winter? I have
two complete sets of tires/wheels that I swap Spring and Fall. This
means you need a spare in the Winter!
Tom K. - 09 May 2006 23:57 GMT
>>Mmm, the run flat debate - again!
>
> What I've wondered is what "run flat" people do in the Winter? I have
> two complete sets of tires/wheels that I swap Spring and Fall. This
> means you need a spare in the Winter!
The Dunlop Winter Sport M3 DSST is an H rated run-flat.
Tom K.
bfd - 09 May 2006 16:10 GMT
> It is too bad when a manufacturer makes a vehicle that you probably
> would like w/o the run flat and loses the customer because they do not
> provide an option of non run flats.
>
> This doesn't bother me because I have the run flats on the Z4 and I have
> NOT had a flat. Ask me again after I have gotten a flat!
I guess the question is how many miles do you have on your Z4? Have you
driven any distance? One problem is if you drive far and are out in the
middle of nowhere and you get a flat. Don't be surprised if that tire cost
ya $400 and you have to stay in a hotel overnight.
> My solutions:
>
> Keep a spare in the garage so that I can drive home with the flattened
> tire and swap it out. Now I have time to decide to repair/replace the
> damaged tire.
This is a good point. But, again if you're far from home, it isn't going to
help.
> Keep a plug kit in the car with a pump. Fix the tire (if possible and
> convienent w/o driving too many miles) I have checked with some experts
> who think it is possible to plug a run flat.
Can runflats be "plugged?" I was under the impression that once damaged,
you need a new tire. Would a better solution be to get one of those
M-mobility kits?
> I have been uneasy about the whole run flat bs, but I have just accepted
> it.
Let's hope run flats aren't the TRX of the 21st century!