E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > The Tire Rack's Tire & Wheel Forum

The Tire Rack's Tire & Wheel Forum
Use this forum to discuss anything in relation to wheels to tires to offsets.
Sponsored by The Tire Rack

Reply
 
Thread Tools Search this Thread Rating: Thread Rating: 5 votes, 5.00 average. Display Modes
Old 11-05-2007, 01:42 AM   #1
Xcelratr
Registered User
 
Join Date: Apr 2007
Location: So Cal - 310
Posts: 958
My Ride: 04 330Ci ZHP
Style 135M - OE ZHP Wheel Specs



Occasionally I see threads asking for info on OE ZHP wheels.

I just installed my new wheels, so I had the chance to weigh and measure the factory wheels from my 2004 330Ci ZHP. Maybe this info will help reduce new posts by those folks that are bright enough to use Search.

FYI - at the time of this posting, my wheels are not for sale. I'm just trying to share info.

2nd FYI - the measurements are made with a tape measure and straight edge. If you're looking for laser-tracking precision stats, they're not in this post. But for most purposes, these numbers should work. The weights are per a USPS scale, so they should be pretty accurate.

OE Style 135 M Double Spoke - bolt pattern 5 x 120 mm

Front - 18x8
Overall Diameter 19.56" (497 mm)
Overall Width 8.88" (226 mm)
Backspacing 6.31" (160 mm)
Offset 1.85" (47 mm)
Weight 28.16 lb (12.77 kg)

Rear - 18x8.5
Overall Diameter 19.56" (497 mm)
Overall Width 9.38" (238 mm)
Backspacing 6.69" (170 mm)
Offset 2.01" (51 mm)
Weight 28.20 lb (12.79 kg)

If I figure out an accurate way of measuring the diameter and depth of the centerbore, I'll post a reply to this thread. But my mic is too wide to fit down inside the wheel and still expand to hit the sides of the bore.

I hope this helps answer some of the questions people have about these wheels.
__________________
----------------------------------------------
Quote:
As a juror, do you think the trial was a publicity stunt?

Yes
----------------------------------------------

Last edited by Xcelratr; 11-05-2007 at 01:45 AM. Reason: Update link
Xcelratr is online now   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 11-05-2007, 08:08 AM   #2
jpr
Registered User
 
Join Date: Aug 2005
Location: San Diego, CA
Posts: 3,005
My Ride: '99 323i
Great idea -

On the weight though, this site - http://felgenkatalog.auto-treff.com/ - lists it as 11.23kg and 11.93kg, which also corresponds to (and means it was probably taken from) the data in the TIS, which lists the weights as 11.226kg and 11.926kg.

While I'm sure you were very careful in your measurements, when I've tried to do similar measurements myself I've found a lot of variation can be introduced based on how the wheel sits on the scale. This might also explain the almost identical weight you found between the two wheels rather than the about 1.5 pound difference cited by other sources.
jpr is offline   Reply With Quote
Old 11-05-2007, 10:31 PM   #3
Xcelratr
Registered User
 
Join Date: Apr 2007
Location: So Cal - 310
Posts: 958
My Ride: 04 330Ci ZHP
Well, that's interesting. I used the same scale to measure my new wheels and they weighed out at almost the exact weights the mfg said they would be. And the scale noted the 1/2 lb difference between the front and the rear.

The OE wheels actually fit easily on the scale, and I just put a twist-tie on the scale (was too light to register on it's own) to keep them from rolling off without me having to touch them. It's possible the calibration of the scale was off, but that would mean my Forgelines are actually 2 to 3 lbs lighter than what the mfg said they would be.

I suppose it's possible that there was a production change and the new 135Ms are lighter than the ones built in 2004 to go on my car. But that would be surprising if true.

If I have access to another scale anytime soon, I'll re-weigh them. If I come up with different weights, I'll add to this thread.
__________________
----------------------------------------------
Quote:
As a juror, do you think the trial was a publicity stunt?

Yes
----------------------------------------------
Xcelratr is online now   Reply With Quote
Old 01-17-2008, 05:24 PM   #4
Tazlord
Registered User
 
Join Date: May 2007
Location: SF Bay Area
Posts: 162
My Ride: 2003 330i ZHP
This might be a dumb question but did you leave the balancing weights on the rim when weighing it?
Tazlord is offline   Reply With Quote
Old 01-17-2008, 09:55 PM   #5
Xcelratr
Registered User
 
Join Date: Apr 2007
Location: So Cal - 310
Posts: 958
My Ride: 04 330Ci ZHP
That's not a dumb question at all.

Weights were removed. Rubber valve stems still installed, center caps in place. But no balancing weights.

__________________
----------------------------------------------
Quote:
As a juror, do you think the trial was a publicity stunt?

Yes
----------------------------------------------
Xcelratr is online now   Reply With Quote
Old 12-01-2009, 03:30 PM   #6
BMW04E46
Registered User
 
Join Date: Jun 2004
Location: Palm Beach, Florida
Posts: 326
My Ride: 2004 325Ci SMG
awesome info!
__________________
2005 Acura TL A-Spec
2004 325Ci SMG M-tech II (Sold and got 2005 Acura TL A-Spec) :-(
2002 530i Sport
1997 Mercedes Benz C280 Sport (Sold and got 2002 530i Sport!) :-)
2007 Yamaha VX Cruiser (WaveRunner)
see my garage for pics

How a Rogue IKON should look on a M-Tech II Coupe
http://forum.e46fanatics.com/showthread.php?t=537372
BMW04E46 is offline   Reply With Quote
Old 12-01-2009, 04:02 PM   #7
4g63GSX
Registered User
 
Join Date: Mar 2006
Location: ID
Posts: 81
My Ride: 07 RRS 03 325 94 GSX
Holy old thread.

Quote:
Originally Posted by Xcelratr View Post
Front - 18x8

Backspacing 6.31" (160 mm)

Rear - 18x8.5

Backspacing 6.69" (170 mm)
The backspacing should be measured from the wheel mounting surface to the vertical centerline of the wheel (looks like you measured it to the inside edge of the wheel?). So I believe it should be a bit smaller than that.
4g63GSX is offline   Reply With Quote
Old 12-02-2009, 01:32 PM   #8
BMW04E46
Registered User
 
Join Date: Jun 2004
Location: Palm Beach, Florida
Posts: 326
My Ride: 2004 325Ci SMG
haha i just wanted to the weight of the wheels LOL
__________________
2005 Acura TL A-Spec
2004 325Ci SMG M-tech II (Sold and got 2005 Acura TL A-Spec) :-(
2002 530i Sport
1997 Mercedes Benz C280 Sport (Sold and got 2002 530i Sport!) :-)
2007 Yamaha VX Cruiser (WaveRunner)
see my garage for pics

How a Rogue IKON should look on a M-Tech II Coupe
http://forum.e46fanatics.com/showthread.php?t=537372
BMW04E46 is offline   Reply With Quote
Old 12-02-2009, 04:33 PM   #9
4g63GSX
Registered User
 
Join Date: Mar 2006
Location: ID
Posts: 81
My Ride: 07 RRS 03 325 94 GSX
Kudos for actually searching.
4g63GSX is offline   Reply With Quote
Old 12-04-2009, 05:46 PM   #10
Richbot
Registered User
 
Join Date: May 2007
Location: Chesterfield, MO
Posts: 62
My Ride: '08 Jerez Black E90
What makes these "M" wheels? Does "M" stand for "Moment of Inertia?" That's at least 8 pounds per wheel heavier than some of the good cast wheels out there in the same size. Jeez.

OE BMW wheels sure are nice looking, but damn, even the "sporting" ones are heavy. I figured maybe my 161's were a fluke because they were designed for run-flats and came on the base-model E90.
__________________
'08 Jerez Black E90
Spec Racer Ford #795
'04 Ram 2500
'14 F34
Richbot is offline   Reply With Quote
Old 01-21-2010, 04:44 PM   #11
Rostasteve
Registered User
 
Join Date: Dec 2009
Location: NJ
Posts: 71
My Ride: E90 M3
Old thread I know, but thanks for weighing them! 28lb is insanely heavy for a "sport" wheel. Once I saw this thread I went out and got a set of 17" BBSes.
Rostasteve is offline   Reply With Quote
Old 04-03-2010, 02:52 AM   #12
stapler12345
Registered User
 
Join Date: Mar 2005
Location: NYC
Posts: 1,590
My Ride: Sakhir Orange M6
Quote:
Originally Posted by Richbot View Post
What makes these "M" wheels? Does "M" stand for "Moment of Inertia?" That's at least 8 pounds per wheel heavier than some of the good cast wheels out there in the same size. Jeez.
was wondering the same thing
__________________

Quote:
Originally Posted by Penguin Koolaid View Post
I've never heard of a woman wanting more than she actually deserved. Never.
stapler12345 is offline   Reply With Quote
Old 05-15-2010, 07:04 PM   #13
Xcelratr
Registered User
 
Join Date: Apr 2007
Location: So Cal - 310
Posts: 958
My Ride: 04 330Ci ZHP
Quote:
Originally Posted by 4g63GSX View Post
Holy old thread.



The backspacing should be measured from the wheel mounting surface to the vertical centerline of the wheel (looks like you measured it to the inside edge of the wheel?). So I believe it should be a bit smaller than that.
Sorry to respond to this 5 months late, didn't realize it had been bumped.

No, what you're referring to is offset. In that case, you're correct that it's the distance from the centerline of the wheel to the mounting face. Offset is almost always expressed in mm, and is positive if the mounting face is outboard (curb side) of the center, negative if the mounting face is inboard (brake side) of the center.

Backspacing is way easier to measure. The offset can be calculated by dividing the actual width of the wheel in half and subtracting the backspacing measurement.

Please see my original post, the offset is listed directly under the backspacing.

__________________
----------------------------------------------
Quote:
As a juror, do you think the trial was a publicity stunt?

Yes
----------------------------------------------
Xcelratr is online now   Reply With Quote
Old 08-14-2013, 08:38 PM   #14
N-AM 007
Registered User
 
Join Date: Jun 2013
Location: Sydney
Posts: 148
My Ride: 330ci 2001
What are the standard tyre size from front and rear wheels,
Ive read 225 fronts and 255 rears, is that correct?
N-AM 007 is offline   Reply With Quote
Old 08-15-2013, 11:51 AM   #15
stalensnuitje
Registered User
 
Join Date: Aug 2013
Location: Netherlands
Posts: 20
My Ride: '05 BMW 320D Tourin
Jup, I have these sizes on my wagon, that's the standard.
stalensnuitje is offline   Reply With Quote
Old 09-29-2013, 09:21 PM   #16
Xcelratr
Registered User
 
Join Date: Apr 2007
Location: So Cal - 310
Posts: 958
My Ride: 04 330Ci ZHP
Quote:
Originally Posted by N-AM 007 View Post
What are the standard tyre size from front and rear wheels,
Ive read 225 fronts and 255 rears, is that correct?
OE tires are 225/40R18 and 255/35R18 Michelin Pilot Sports.
__________________
----------------------------------------------
Quote:
As a juror, do you think the trial was a publicity stunt?

Yes
----------------------------------------------
Xcelratr is online now   Reply With Quote
Old 10-21-2013, 08:10 PM   #17
crazzy88ss
Registered User
 
Join Date: Nov 2007
Location: CA
Posts: 78
My Ride: 05 330 ZHP auto
So if I get new wheels to replace my 135Ms that shave, as an example from above, 8 pounds off a wheel, will that really translate into noticeable results? Better fuel economy? Faster acceleration times? Better handling? etc
crazzy88ss is offline   Reply With Quote
Old 10-30-2013, 10:53 AM   #18
Xcelratr
Registered User
 
Join Date: Apr 2007
Location: So Cal - 310
Posts: 958
My Ride: 04 330Ci ZHP
Results, yes. Noticeable, maybe not so much.

If there's one aspect I noticed after putting lighter wheels on my car, it was braking. Seemed to me that under heavy braking, the car stopped just a tiny bit better with the lighter wheels. Could also be one part of my brain convincing another part to feel a difference in order to justify the expense. LOL

Under highly controlled circumstances, you might be able to measure an mpg increase or better 0-60 or 1/4 mile or lap time. But real world driving varies so much that the difference the lighter wheels makes gets lost in the normal variance of such things.

$0.02
__________________
----------------------------------------------
Quote:
As a juror, do you think the trial was a publicity stunt?

Yes
----------------------------------------------
Xcelratr is online now   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 02:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use