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      10-18-2008, 03:34 PM   #1
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Identify these RIMS, I think one of you guys has them. . .

I posted this in the M3 Section because I'm about 90% sure one of you guys has these rims on a Melbourne Red E92. And I'm looking to upgrade my wheels before winter kicks in. Thanks in advance guys! And what are your thoughts on the rims in general? Personally I think they look amazing.

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      10-18-2008, 03:37 PM   #2
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HRE P40 Monoblok Rims with the brushed finish. I agree they look amazing. There is a thread on NAGTROC with a ton of cars using these rims from the new GTR to porches etc...

Thinking about getting them in black for my F
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      10-18-2008, 03:59 PM   #3
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HRE P40's.
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      10-18-2008, 04:02 PM   #4
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Quote:
Originally Posted by godora View Post
HRE P40's.
yeah ,great looking.
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      10-18-2008, 04:46 PM   #5
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great looking rims... but HREs are generally a little pricey... not sure bout the exact price but i know its 4k+...then again they are monoblock forged rims so you do get a high quality lightweight rim.
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      10-18-2008, 04:47 PM   #6
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light weight..timeless design..hre's monoblock p40's..i'd definitely recommend them..
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      10-18-2008, 05:34 PM   #7
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Quote:
Originally Posted by montreal jet black View Post
great looking rims... but HREs are generally a little pricey... not sure bout the exact price but i know its 4k+...then again they are monoblock forged rims so you do get a high quality lightweight rim.
Any vendors on the forums sell them? And if anyone has an exact price PM me. It would be a 50/50 gift for my bday, from my girlfriend. I'm turning the 172M style rims into winters and purchasing a pair of summers while I can still get a decent price
Here's my girl's car BTW: (a bit off topic, I know)
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      10-18-2008, 09:03 PM   #8
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P40s are $$$$ but look great on 5s!
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      10-18-2008, 09:11 PM   #9
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Amazing.
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      10-18-2008, 09:54 PM   #10
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Quote:
Originally Posted by PLAYON View Post
I posted this in the M3 Section because I'm about 90% sure one of you guys has these rims on a Melbourne Red E92. And I'm looking to upgrade my wheels before winter kicks in. Thanks in advance guys! And what are your thoughts on the rims in general? Personally I think they look amazing.
VMR V710s are another alternative, here they are on MR w/ KW3s:











We've got these in stock, let me know when you're ready to get set up.
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      10-18-2008, 09:56 PM   #11
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Here's a set in Matte Black on our own SG M3 - these will be in stock in about 1 month:



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      10-18-2008, 10:00 PM   #12
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P40s are a little overplayed now on the e92s
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      10-18-2008, 10:55 PM   #13
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Quote:
Originally Posted by pittsy View Post
P40s are a little overplayed now on the e92s
They're going on my E60 550i, I think I still make the cut. . .

***Tom, thanks for those shots of the VMR 710s. . .the Matte Blacks look stellar but I don't think they would jive well with the Carbon Black Metallic. . .at any rate what do a set of these run in a 19". . .Even though I really have my eyes set on the HRE's
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      10-19-2008, 12:13 AM   #14
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Would somebody mind PM'ing me pricing on the P40's if they know??? Thanks a lot.
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      10-19-2008, 12:54 AM   #15
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HRE P40s @ Bimmer Performance Store

Quote:
Originally Posted by PLAYON View Post
Any vendors on the forums sell them? And if anyone has an exact price PM me. It would be a 50/50 gift for my bday, from my girlfriend. I'm turning the 172M style rims into winters and purchasing a pair of summers while I can still get a decent price
Here's my girl's car BTW: (a bit off topic, I know)
Yup, we're an authorized HRE dealer and I have them on my E92 M3 in gloss charcoal. You can find them in our online catalog here.

BTW, the HRE's are one-piece forged so they are lighter and stronger than a cast wheel. P40s in 19x9 & 19x11 weigh 23# front and 24.125# rear. Most cast wheels in a similar size weigh 26 to 28#. If you use 7 pounds as the factor to measure the rotational mass, 4 pounds of wheels equates to 112 pounds added to the car (4# X 7 X 4 wheels). That's why lightweight wheels and tires can make a big difference.

Check out my pics below.

Bob


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      10-19-2008, 02:09 PM   #16
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Quote:
Originally Posted by PLAYON View Post
They're going on my E60 550i, I think I still make the cut. . .

***Tom, thanks for those shots of the VMR 710s. . .the Matte Blacks look stellar but I don't think they would jive well with the Carbon Black Metallic. . .at any rate what do a set of these run in a 19". . .Even though I really have my eyes set on the HRE's
I actually have some pics of the V710s on a MY07 550, shoot me a quick email and I will be happy to reply with them.
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      10-19-2008, 05:08 PM   #17
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Originally Posted by tom @ eas View Post
I actually have some pics of the V710s on a MY07 550, shoot me a quick email and I will be happy to reply with them.
email sent
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      10-19-2008, 05:17 PM   #18
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They look nice, but are not my style.
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      10-19-2008, 07:10 PM   #19
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Quote:
Originally Posted by Bob@BPS View Post
If you use 7 pounds as the factor to measure the rotational mass, 4 pounds of wheels equates to 112 pounds added to the car (4# X 7 X 4 wheels). That's why lightweight wheels and tires can make a big difference.
sorry could you explain what you mean by "7 pounds as the factor"?
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      10-19-2008, 07:49 PM   #20
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I have v710s on my E92. absolutely LOVEEEE these wheels. I wouldve got the HREs but they are pricey IMO. not worth it. at least if i bend one of theses it wont hurts as much lol. but i say go for it. that e60 looks amazing with them on.
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      10-19-2008, 09:10 PM   #21
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bump. if anyone has anymore opinions or prices
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      10-19-2008, 10:23 PM   #22
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So, what is the right factor???

Quote:
Originally Posted by rldzhao View Post
sorry could you explain what you mean by "7 pounds as the factor"?
Not 7 pounds, but 7 times the weight because it is a rotating mass. That is the common factor used by most people. I'm not an engineer, so before I go spewing hearsay, I thought I'd do a little research. What I found was factors quoted as high as 10 times or as low as 2. What appears to be the truth is the farther the mass is from the axis of rotation, the more affect it will have. I interpret that to mean the actual factor will depend where the weight is saved. Tires should theoretically make a bigger difference than the wheels. What that would also mean is those REALLY expensive Dynamag wheels with CF spokes would make a bigger difference in unsprung weight than rotational mass, since they are saving most of the weight close to the axis of rotation.

Here are a few links I found during my Google search on "rotational mass":

http://news.carjunky.com/automotive/...nal_Mass.shtml
http://www.ux1.eiu.edu/~cfadd/1150/09Rot/RotDyn.html

Here is a good page that explains the difference between sprung and unsprung weight.

http://victorylibrary.com/mopar/sprung-c.htm

I also found a really good post at BimmerForums from 2003 here. The member StevenGee calculated a 0-60 difference of 2/10's of a second comparing a 36# wheel/tire combo to a 49# set on an E36 M3.

The bottom line is a lighter wheel/tire combo is definitely a performance mod. Another spec that is thrown around a lot is every 100 pounds of weight saved is equivalent to 10HP. Whatever the correct calc is, no one wil argue that weight is an enemy of performance (both speed and handling).

Bob
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