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Dotcom Computers Ltd
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 Posted:
Sat Nov 19, 2005 11:26 pm Post subject:
BMW tyre/wheel choices |
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I wonder if the new run-flat tyre system found on all new BMW's in the UK
market will go the same way as the metric tyres they fitted back in the 90's
Discuss
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Jason Russell
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Tom K.
Guest
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| Posted:
Sun Nov 20, 2005 1:01 am Post subject:
Re: BMW tyre/wheel choices |
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"Dotcom Computers Ltd" <invalid@invalid..invalid> wrote in message
news:D4ednXxMzq_0_eLenZ2dnUVZ8qadnZ2d@pipex.net...
| Quote: |
I wonder if the new run-flat tyre system found on all new BMW's in the UK
market will go the same way as the metric tyres they fitted back in the
90's
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Hmmm. In the U.S., run-flats are only standard on the Z4, 3 and 6 series.
They are optional on the 5 series and not available on the 7, X5, or X3
according to http://www.bmwusa.com
Tom |
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E Brown
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| Posted:
Sun Nov 20, 2005 3:45 am Post subject:
Re: BMW tyre/wheel choices |
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On Sat, 19 Nov 2005 17:26:20 -0000, "Dotcom Computers Ltd"
<invalid@invalid..invalid> wrote:
| Quote: | I wonder if the new run-flat tyre system found on all new BMW's in the UK
market will go the same way as the metric tyres they fitted back in the 90's
|
In a perfect world I'd retrofit them to my 325i and stick with
normal tires on my Z4. I think they're a great idea for commuter
cars - I'd certainly prefer the option of never being stuck in rush
hour with a flat, or having my girlfriend on some dark road in Chicago
winter cold with one.
On performance cars like my Z4 (no, seriously!), I don't think
they're ready yet. The ride and handling greatly improve on the Z4
once the run-flats are removed - it's the best modification for the
car this side of heated M-sport seats, and lots cheaper. I wish the
magazine driving comparisons could be done with the Z4 on good sports
tires - it'd fare a LOT better.
epbrown
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2003 BMW 325i Black/Black
2003 BMW Z4 Black/Black
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Dotcom Computers Ltd
Guest
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| Posted:
Sun Nov 20, 2005 7:07 am Post subject:
Re: BMW tyre/wheel choices |
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In news:gp5vn1ljqjctidjl8tj87h7dg3dk4q6snt@4ax.com,
E Brown <epbrown01@att.net> typed:
| Quote: | On Sat, 19 Nov 2005 17:26:20 -0000, "Dotcom Computers Ltd"
invalid@invalid..invalid> wrote:
I wonder if the new run-flat tyre system found on all new BMW's in
the UK market will go the same way as the metric tyres they fitted
back in the 90's
In a perfect world I'd retrofit them to my 325i and stick with
normal tires on my Z4. I think they're a great idea for commuter
cars - I'd certainly prefer the option of never being stuck in rush
hour with a flat, or having my girlfriend on some dark road in Chicago
winter cold with one.
On performance cars like my Z4 (no, seriously!), I don't think
they're ready yet. The ride and handling greatly improve on the Z4
once the run-flats are removed - it's the best modification for the
car this side of heated M-sport seats, and lots cheaper. I wish the
magazine driving comparisons could be done with the Z4 on good sports
tires - it'd fare a LOT better.
epbrown
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Here in the UK, to my knowledge the new 3, 5 and 6 have them (not M models).
I did wonder how easy it is to cahnge them to normal rims and tyres given
the comuter warnig interface etc
What was interesting, is that the 5 was designed using 'normal' tyres, cos
all the reviews I read critised the run flats, whereas the 3 was designed
with runflats as standard.
I guess the other 'advantage' is that no spare, so hence no sapce impact!
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Jason Russell |
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AdrianHi
Guest
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| Posted:
Mon Nov 21, 2005 7:28 pm Post subject:
Re: BMW tyre/wheel choices |
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This months BMW magazine (UK) had a short article on run flat tyres.
BMW did experiments on the 5 series with and without run flats with a
blow out at motorway/freeway speeds (70mph?). With regular tyres the
car would spin out of control, with run flats, a warning light comes on
the dash to tell you a tyre is under pressure, you slow down to 50mph
and drive to a garage for repairs.
The new E90/E91 3 series has run flats by design. The grip and
handling is outstanding and the ride comfortable though firm. We will
never know what this 3 series would be like with regular tyres.
Adrian |
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Tom K.
Guest
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| Posted:
Mon Nov 21, 2005 11:07 pm Post subject:
Re: BMW tyre/wheel choices |
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"AdrianHi" <adrian.hilder@gmail.com> wrote in message
news:1132579719.492100.44240@g14g2000cwa.googlegroups.com...
| Quote: | The new E90/E91 3 series has run flats by design. The grip and
handling is outstanding and the ride comfortable though firm. We will
never know what this 3 series would be like with regular tyres.
Adrian
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I suspect some E90 drivers will ultimately replace their run-flats with
conventional tires which can be mounted on the same rims. Then, we'll know!
Reports from the Z4 owners who have substituted Goodyear Eagle F1 Ds-D3 (non
run-flats) for the OEM Bridgestones indicate improved ride, wear and
handling.
Tom |
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