| Author |
Message |
Abs
Guest
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 Posted:
Mon Dec 06, 2004 3:28 am Post subject:
97 M3-floating rotors or After market solid rotor? |
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My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have had no
problems and on the few track days I go to a year the brakes have been
wonderful. I'm willing to pay more but am I just throwing money away?
Thanks in Advance
Hany.
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Jim Levie
Guest
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| Posted:
Mon Dec 06, 2004 4:49 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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On Mon, 06 Dec 2004 09:28:22 +1100, Abs wrote:
| Quote: | My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have had
no problems and on the few track days I go to a year the brakes have been
wonderful. I'm willing to pay more but am I just throwing money away?
Thanks in Advance
Hany.
|
If you track the car I'd suggest either the OEM rotors or high-performance
grooved rotors. Personally I can't see the point of cross-drilling, other
than it looks neat. Seems to me that drilling holes in the rotors only
reduces the surface area in contact with the pads. The grooves, on the
other hand, don't substantially reduce the contact area and do provide
escape paths for the vaporised pad material in hard breaking.
I may not be the only one that thinks this way. At a recent Rolex Cup race
I didn't see anyone running drilled rotors when I wandered the pits. But I
did see lots of grooved rotors.
--
The instructions said to use Windows 98 or better, so I installed RedHat. |
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Abs
Guest
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| Posted:
Mon Dec 06, 2004 5:41 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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I agree regarding the cross drilled, mostly for show rather than anything
else. The OEM perform flawlessly and I've heard are less likely to warp than
the aftermarket ones. I was just wondering if the aftermarket ones are any
good considering they are a quarter the price of the OEM's. I will most
likely get the OEMs.
Thanks
Hany
"Jim Levie" <jim@entrophy-free.net> wrote in message
news:pan.2004.12.05.23.49.50.887867@entrophy-free.net...
| Quote: | On Mon, 06 Dec 2004 09:28:22 +1100, Abs wrote:
My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have had
no problems and on the few track days I go to a year the brakes have been
wonderful. I'm willing to pay more but am I just throwing money away?
Thanks in Advance
Hany.
If you track the car I'd suggest either the OEM rotors or high-performance
grooved rotors. Personally I can't see the point of cross-drilling, other
than it looks neat. Seems to me that drilling holes in the rotors only
reduces the surface area in contact with the pads. The grooves, on the
other hand, don't substantially reduce the contact area and do provide
escape paths for the vaporised pad material in hard breaking.
I may not be the only one that thinks this way. At a recent Rolex Cup race
I didn't see anyone running drilled rotors when I wandered the pits. But I
did see lots of grooved rotors.
--
The instructions said to use Windows 98 or better, so I installed RedHat.
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Mike G
Guest
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| Posted:
Mon Dec 06, 2004 5:41 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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"Abs" <Hanyabs@hotmail.com> wrote in message
news:41b38b84$0$8114$afc38c87@news.optusnet.com.au...
| Quote: | My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have had
no
problems and on the few track days I go to a year the brakes have been
wonderful. I'm willing to pay more but am I just throwing money away?
Thanks in Advance
Hany.
|
As long as the after market ones come from a reputable manufacturer, I'd
advise buying them.
My BM doesn't have OE discs, neither does my Celica GT4 turbo.
I can't tell the difference from OE ones with either.
Mike. |
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Jim Levie
Guest
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| Posted:
Mon Dec 06, 2004 5:41 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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On Mon, 06 Dec 2004 12:53:51 +1100, Abs wrote:
| Quote: | I agree regarding the cross drilled, mostly for show rather than anything
else. The OEM perform flawlessly and I've heard are less likely to warp
than the aftermarket ones. I was just wondering if the aftermarket ones
are any good considering they are a quarter the price of the OEM's. I will
most likely get the OEMs.
If you weren't taking the car to the track and it wasn't an M I wouldn't |
hesitate to use non-OEM rotors from a major manufacturer. That not being
the case I'd either go for OEM , or better yet the grooved performance
rotors. Given the OEM price I suspect grooved rotors for your M3 will be
comparable in price.
BTW: Were the non-OEM's you were looking floating rotors specifically for
an M3?
| Quote: | "Jim Levie" <jim@entrophy-free.net> wrote in message
news:pan.2004.12.05.23.49.50.887867@entrophy-free.net...
On Mon, 06 Dec 2004 09:28:22 +1100, Abs wrote:
My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have
had no problems and on the few track days I go to a year the brakes
have been wonderful. I'm willing to pay more but am I just throwing
money away? Thanks in Advance
Hany.
If you track the car I'd suggest either the OEM rotors or
high-performance grooved rotors. Personally I can't see the point of
cross-drilling, other than it looks neat. Seems to me that drilling
holes in the rotors only reduces the surface area in contact with the
pads. The grooves, on the other hand, don't substantially reduce the
contact area and do provide escape paths for the vaporised pad material
in hard breaking.
I may not be the only one that thinks this way. At a recent Rolex Cup
race I didn't see anyone running drilled rotors when I wandered the
pits. But I did see lots of grooved rotors.
--
The instructions said to use Windows 98 or better, so I installed
RedHat.
|
--
The instructions said to use Windows 98 or better, so I installed RedHat. |
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| Back to top |
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Abs
Guest
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| Posted:
Tue Dec 07, 2004 3:28 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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The non OEM rotors weren't floating they were a one piece rotor for the M3
so they were made in a left and a right. Most of the spare parts guys didn't
know what a floating rotor was and wasted a lot of time trying to convince
me that they were the same as what the car had originally. When I showed
them they car they didn't have much to say afterwards.
Hany.
"Jim Levie" <jim@entrophy-free.net> wrote in message
news:pan.2004.12.06.04.56.15.358941@entrophy-free.net...
| Quote: | On Mon, 06 Dec 2004 12:53:51 +1100, Abs wrote:
I agree regarding the cross drilled, mostly for show rather than anything
else. The OEM perform flawlessly and I've heard are less likely to warp
than the aftermarket ones. I was just wondering if the aftermarket ones
are any good considering they are a quarter the price of the OEM's. I
will
most likely get the OEMs.
If you weren't taking the car to the track and it wasn't an M I wouldn't
hesitate to use non-OEM rotors from a major manufacturer. That not being
the case I'd either go for OEM , or better yet the grooved performance
rotors. Given the OEM price I suspect grooved rotors for your M3 will be
comparable in price.
BTW: Were the non-OEM's you were looking floating rotors specifically for
an M3?
"Jim Levie" <jim@entrophy-free.net> wrote in message
news:pan.2004.12.05.23.49.50.887867@entrophy-free.net...
On Mon, 06 Dec 2004 09:28:22 +1100, Abs wrote:
My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have
had no problems and on the few track days I go to a year the brakes
have been wonderful. I'm willing to pay more but am I just throwing
money away? Thanks in Advance
Hany.
If you track the car I'd suggest either the OEM rotors or
high-performance grooved rotors. Personally I can't see the point of
cross-drilling, other than it looks neat. Seems to me that drilling
holes in the rotors only reduces the surface area in contact with the
pads. The grooves, on the other hand, don't substantially reduce the
contact area and do provide escape paths for the vaporised pad material
in hard breaking.
I may not be the only one that thinks this way. At a recent Rolex Cup
race I didn't see anyone running drilled rotors when I wandered the
pits. But I did see lots of grooved rotors.
--
The instructions said to use Windows 98 or better, so I installed
RedHat.
--
The instructions said to use Windows 98 or better, so I installed RedHat.
|
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Abs
Guest
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| Posted:
Tue Dec 07, 2004 3:31 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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The aftermarket ones I've found are from Zimmerman and Brembo, so they are
good quality but I'm not sure they are as good as OEM especially in regard
to heat dissipation.
Hany.
"Mike G" <mikgibbs@tiscali.co.uk> wrote in message
news:31htl5F3botojU1@individual.net...
| Quote: |
"Abs" <Hanyabs@hotmail.com> wrote in message
news:41b38b84$0$8114$afc38c87@news.optusnet.com.au...
My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have had
no
problems and on the few track days I go to a year the brakes have been
wonderful. I'm willing to pay more but am I just throwing money away?
Thanks in Advance
Hany.
As long as the after market ones come from a reputable manufacturer, I'd
advise buying them.
My BM doesn't have OE discs, neither does my Celica GT4 turbo.
I can't tell the difference from OE ones with either.
Mike.
|
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tech27
Guest
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| Posted:
Wed Dec 08, 2004 11:03 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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"Abs" <Hanyabs@hotmail.com> wrote in message
news:41b38b84$0$8114$afc38c87@news.optusnet.com.au...
| Quote: | My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have had
no problems and on the few track days I go to a year the brakes have been
wonderful. I'm willing to pay more but am I just throwing money away?
Thanks in Advance
Hany.
|
Not at all. Floating rotors are far superior, just make sure you get a
quality set. Many guys at the track days I go to use them and love them. It
is generally accepted that they are far superior, but they are not
considered good for everyday driving - for some reason I can't remember, but
IIRC it has to do with long term safety and wear, as opposed to performance. |
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Dave Plowman (News)
Guest
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| Posted:
Wed Dec 08, 2004 11:53 pm Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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In article <5Pwtd.30079$NC6.21651@newsread1.mlpsca01.us.to.verio.net>,
tech27 <tech27@mail.anonymizer.com> wrote:
| Quote: | Not at all. Floating rotors are far superior, just make sure you get a
quality set.
|
It's probably a language thing, but what's a floating rotor?
(and not disc for rotor - sorted that out years ago ;-))
--
*Dance like nobody's watching.
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound. |
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Abs
Guest
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| Posted:
Thu Dec 09, 2004 3:33 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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Thanks I think that seals it, I will buy the floating rotors from BMW.
Hany.
"tech27" <tech27@mail.anonymizer.com> wrote in message
news:5Pwtd.30079$NC6.21651@newsread1.mlpsca01.us.to.verio.net...
| Quote: |
"Abs" <Hanyabs@hotmail.com> wrote in message
news:41b38b84$0$8114$afc38c87@news.optusnet.com.au...
My front rotors are near the end of their life and I have priced some
replacements. The Genuine rotors are $AU285ea while after market ones
are$AU70ea. My question is, is it worth paying the extra cash? I have had
no problems and on the few track days I go to a year the brakes have been
wonderful. I'm willing to pay more but am I just throwing money away?
Thanks in Advance
Hany.
Not at all. Floating rotors are far superior, just make sure you get a
quality set. Many guys at the track days I go to use them and love them.
It is generally accepted that they are far superior, but they are not
considered good for everyday driving - for some reason I can't remember,
but IIRC it has to do with long term safety and wear, as opposed to
performance.
|
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Abs
Guest
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| Posted:
Thu Dec 09, 2004 5:41 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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Hi, a floating rotor has an alloy hub with spokes that attach to the
rotor,unlike the aftermarket rotor which are one piece. Hope that an
adequate description.
Hany.
"Dave Plowman (News)" <dave@davenoise.co.uk> wrote in message
news:4d1a4f3537dave@davenoise.co.uk...
| Quote: | In article <5Pwtd.30079$NC6.21651@newsread1.mlpsca01.us.to.verio.net>,
tech27 <tech27@mail.anonymizer.com> wrote:
Not at all. Floating rotors are far superior, just make sure you get a
quality set.
It's probably a language thing, but what's a floating rotor?
(and not disc for rotor - sorted that out years ago ;-))
--
*Dance like nobody's watching.
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound. |
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Fred W
Guest
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| Posted:
Thu Dec 09, 2004 9:27 pm Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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Dave Plowman (News) wrote:
| Quote: | In article <5Pwtd.30079$NC6.21651@newsread1.mlpsca01.us.to.verio.net>,
tech27 <tech27@mail.anonymizer.com> wrote:
Not at all. Floating rotors are far superior, just make sure you get a
quality set.
It's probably a language thing, but what's a floating rotor?
(and not disc for rotor - sorted that out years ago ;-))
|
The "floating" rotor indicates a 2 piece brake rotor where the hub part
is allow and the disk is steel. I don't believe that anything actually
"floats" so I don't really understand the nomenclature myself, and I
also don't quite understand how isolating the steel disk on an alloy hub
improves the heat transfer, but that is the claim.
Here is what they look like:
<http://www.turnermotorsport.com/html/detail.asp?PRODUCT_ID=34112227737>
-Fred W |
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lmj
Guest
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| Posted:
Sun Dec 19, 2004 3:23 am Post subject:
Re: 97 M3-floating rotors or After market solid rotor? |
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Floating rotors are not intended to improve heat transfer. The purpose
is to allow thermal expansion of the rotor without causing distortion.
The rotor is allowed to expand as it heats up without directly
transfering the resulting strain to the hub.
lmj
1998 M3 Sedan
Colchester, Ct
In article <5tadnQHUrODw4SXcRVn-og@adelphia.com>,
Fred W <Fred.Wills@SPAMmyrealbox.com> wrote:
| Quote: | Dave Plowman (News) wrote:
In article <5Pwtd.30079$NC6.21651@newsread1.mlpsca01.us.to.verio.net>,
tech27 <tech27@mail.anonymizer.com> wrote:
Not at all. Floating rotors are far superior, just make sure you get a
quality set.
It's probably a language thing, but what's a floating rotor?
(and not disc for rotor - sorted that out years ago ;-))
The "floating" rotor indicates a 2 piece brake rotor where the hub part
is allow and the disk is steel. I don't believe that anything actually
"floats" so I don't really understand the nomenclature myself, and I
also don't quite understand how isolating the steel disk on an alloy hub
improves the heat transfer, but that is the claim.
Here is what they look like:
http://www.turnermotorsport.com/html/detail.asp?PRODUCT_ID=34112227737
-Fred W |
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