if you get lose air in an out of the way place, because you'll just
keep driving. Most people can't tell the difference between a flat and
an inflated tire with run-flats, which is why there's a tire pressure
monitor to let you know.
As for how they perform - they had a negative effect on my Z4's
handling, which is why I swapped them for Goodyears. I don't think BMW
had the hang of tuning the suspension for them - reports on the ride
of the E90 3-series are much better, as well as the facelifted Z4s
released this year
Since I don't have a spare and no longer have run-flats, I added
the BMW Mobility Kit to my Z4. With serious tire damage, I'm screwed.
I'll take my chances - I've never had a flat tire. I read somewhere
that only 5% of motorists ever have.
2003 BMW 325i Black/Black
2003 BMW Z4 Black/Black
I bought the 5er because it had slightly more interior room (primarily
shoulder room, a bit more rear seat leg room) and its superior ride. The
longer wheelbase made a big difference over our not-so-wonderful local
roads. I was willing to sacrifice a couple tenths in acceleration and 1 or
2 hundredths in cornering G for these qualities. The car is an absolute joy
R / John
Coupes look better to some people. Plus they cost more than sedans, a
desirable point for some especially when combined with the lower
practicality (image thing).
Logically, you are quite right; for cars like BMW's coupes make zero sense
vs. sedans. Logic does not rule, though, for many.
I once owned at the same time a 91 325i coupe and a 91 325iX sedan.
The coupe was a great little sports car that happened to have some extra
seats in the back. The iX was a very competent grocery-getter that handled
the snow like a Polaris snowcat, but was about as much fun to drive as a
Adding up the differences between the two cars, I decided the big factor in
how they handled was weight. The coupe had a 5-speed and little extra on it
except a leather interior. The iX had the weight of 1) an automatic
transmission, 2) seat heaters, 3) a sunroof, 4) extra door hardware for the
two extra doors, 5) the 4-wheel drive hardware, 6) the extra metal of a
slightly squarer sedan roofline.
I have no idea what the real weight difference was between the two, but
driving it, the iX always felt like I had 400 pounds of cement in the trunk.
Since owning those two cars I've always looked for as light a BMW as I can
find in the model I want. A coupe, to me, is a good starting point.
(As a point of reference, the current 330i Sedan weights 3417 pounds. The
330i coupe weights 3285. That's a difference of 132 pounds, all or mostly
very high up, right where you don't want it.)
-- And all this calculation goes out the window when you're talking
convertibles. Damn the extra weight, convertibles are just fun.
Hence the "kid" component in your userid :-)
All my coupes have front seats that recline to a fully horizontal
position while the sedans don't. I figure that's so single guys can
have sex in them.
Sedans are for hauling kids around.
Need Mercedes parts? http://parts.mbz.org
Richard Sexton | Mercedes stuff: http://mbz.org
The E46 BMW coupes' seats only recline till ~160 degrees ;( which
are enough I guess. But I also wish I could disable the lateral lumbar
support - but on second thought - maybe not, makes it tight(er).... ;)
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