|
|
|
KEEP M3POST ALIVE BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER LINK! |
Post Reply |
|
Thread Tools | Search this Thread |
03-25-2009, 12:31 AM | #23 |
Lieutenant General
310
Rep 13,114
Posts |
WOW!
great information so assuming that the wheel bearing design has advanced from the e46 m3, the e92 m3 should run with spacers without a problem? do we have anyone here with an engineering background that may want to contribute? |
Appreciate
0
|
03-25-2009, 01:23 AM | #24 | |||
Lieutenant General
634
Rep 10,407
Posts |
Quote:
Quote:
As a side note the when under tension loads (NOT side loads) the first 2-3 threads of almost any fastener and the material it mates with will hold the vast majority of the load. This is due to the elongation of the entire fastener. The threads past those simply become a loose fit. However, when you want to consider side loads, resistance to stripping and other load conditions the rule of thumb above comes into play. Quote:
Now X5s don't typically generate M3 type cornering loads, but at grip limit the loads will be large. This also reinforces my point that 20 mm is a totally aribitrary upper limit. |
|||
Appreciate
0
|
03-25-2009, 10:01 AM | #25 |
C
51
Rep 724
Posts |
I spent half of year to research spacer matter.
First I talked to Honda Engineer of Car Design Team (my best friend). I went to talked to mechanic. Finally I looked at dealer's chief mechanic's car, a few of them own M3. Result is as following; Spacer place in between wheel and hub, there is alway space in between; whether it is small or large. While you drove throught curd and bump, there is a challenge to spacer. For same material, material strength is depend on its thickness. For thin spacer such as 1mm, you can bend it by hand For thicker spacer make by very strong material that can hold hits while you drove throught curd and bump. Problem is force on wheel bearing, bolt length in hub is unchange, increase of spacer, increase of bolt total length. (Spacer thickness/original bolt length)*100 relate to percentage of increase force to wheel bearing. Every mechanical part will break, car engineer can only design part to fullfil warrantly period with given data. Changing bolt length change all geometry data. If spacer is ok, car manufacturer will be the first one make it and put their logo on it. They can also make different thickness of hub and put their logo on and call it performance part. If they don't know how to make it, they can purchase from after market and print their logo on it. Laterly wheel design changes to deep rim because of brake caliper. If adding spacer is a solution, they make wheel with thick spacer and long bolt. Manufacture make wheel with deep rim, such as BMW, 09 Subara STI. Changes a structural design cost a huge investment. When I talk to senior mechanic, they said "I am happy with my OEM rim". Why??? One of mechanic told me, "Adding a spacer and long bolt, drive to Dealer and ask for wheel bearing warrantly, you will have an answer." Finally I will change my rim only with original offset. There RIM manufacturer do custom offset such as http://neezinternational.com/structure.html |
Appreciate
0
|
03-25-2009, 12:03 PM | #26 |
JOSH SHOKRI.
534
Rep 5,881
Posts
Drives: 991 GT3RS, 964, Raptor
Join Date: Aug 2005
Location: los angeles, california.
|
I'm running a 20mm upfront and I wouldn't go more then that..
__________________
Current: 16 991 GT3RS , 91 964 C2, 17 Raptor | Past: 2015 991 GT3, 2015 i3,15 YMB F80 M3, 13 E92 M3 DCT, 08 E92 M3 6MT, 07 E60 M5, 02 E46 M3
Instagram: @josh_speeddistrict #SpeedDistrict @SpeedDistrict |
Appreciate
0
|
03-25-2009, 03:06 PM | #27 |
Registered
0
Rep 2
Posts |
My only concern with spacers is when pushing the wheels out further toward the wheel arch, be it directly in line or even perhaps slightly protruding, that you may get tire rubbing. This is actually a question, not a statement! I have 19 inch Alloy Technic B9 wheels and the car is lowered on H&R's, by roughly an inch. I want to install spacers but obviously I want to avoid any body damage! Also, is it better to go with the same length at each corner ... say 15mm all round .... or is it better to go with something like I have seen mentioned before .... 15mm front / 10mm rear? I don't really understand the latter concept but that seems to be a popular choice.
Any answers? Thanks! |
Appreciate
0
|
03-25-2009, 04:31 PM | #28 | |
Lieutenant General
310
Rep 13,114
Posts |
Quote:
|
|
Appreciate
0
|
03-25-2009, 04:33 PM | #30 | |
Lieutenant General
634
Rep 10,407
Posts |
Quote:
|
|
Appreciate
0
|
03-25-2009, 04:35 PM | #31 | |
Lieutenant General
310
Rep 13,114
Posts |
Quote:
|
|
Appreciate
0
|
03-25-2009, 04:35 PM | #32 | |
Lieutenant General
310
Rep 13,114
Posts |
Quote:
|
|
Appreciate
0
|
03-25-2009, 04:53 PM | #33 | ||||||
Lieutenant General
634
Rep 10,407
Posts |
For being an "expert" you have many things completely incorrect.
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
|
||||||
Appreciate
0
|
03-25-2009, 05:05 PM | #34 | |
Registered
0
Rep 2
Posts |
Quote:
I still don't quite get why the larger increase in the front, over that in the rear, appears to be preferred? I know what increasing track width does, apart from the aesthetics, but why not increase the rear the same as the front? |
|
Appreciate
0
|
03-25-2009, 05:08 PM | #35 | |
Lieutenant General
310
Rep 13,114
Posts |
Quote:
|
|
Appreciate
0
|
03-25-2009, 05:10 PM | #36 | |
C
51
Rep 724
Posts |
Quote:
After add spacer and changing long bolt, drive down to dealership and ask for manufactorier warrantly. They will give you an good answer. Wheel bearing maybe not to expensive, but the topic is "Spacers + wheel bearing = ?" |
|
Appreciate
0
|
03-25-2009, 05:11 PM | #37 | |
Lieutenant General
634
Rep 10,407
Posts |
Quote:
The reason folks go with larger spacer front than rear is PURELY cosmetic. Most want the arched to appear nicely filled out from the top or rear and from the factory the front is tucked in more. |
|
Appreciate
0
|
03-30-2009, 05:37 PM | #38 |
JOSH SHOKRI.
534
Rep 5,881
Posts
Drives: 991 GT3RS, 964, Raptor
Join Date: Aug 2005
Location: los angeles, california.
|
i ran 20mm on my stockies...
theyre for sale now.
__________________
Current: 16 991 GT3RS , 91 964 C2, 17 Raptor | Past: 2015 991 GT3, 2015 i3,15 YMB F80 M3, 13 E92 M3 DCT, 08 E92 M3 6MT, 07 E60 M5, 02 E46 M3
Instagram: @josh_speeddistrict #SpeedDistrict @SpeedDistrict |
Appreciate
0
|
03-31-2009, 03:50 AM | #40 | |
BimmerPost Supporting Vendor
734
Rep 3,732
Posts |
Quote:
Most of what has been said is pretty accurate. Shank length is an important factor, along with the additional leverage produced by the increased track length per side from the OUTSIDE of the wheel hub. Running a wheel spacer is nearly the same as running a wider wheel, especially wheels with a deep dish. Deep dish wheels are substantially harder on wheel bearings than even a 20mm spacer would be. If it makes anyone feel better, a mild spacer, such as 15mm, would not consitute enough leverage on the hub and bearing to cause premature failure. As it has been mentioned, the wheel bearing for high performance cars are designed to withstand a lot more than what a wheel spacer would do from a negative standpoint.
__________________
BMW PERFORMANCE SPECIALISTS. Race Engines. Suspension. F/I. Brakes. Race Preparation. Factory Service. Alignments.
OFFICIAL PARTNERS: KW. MOTON. Brembo. AP Racing. BBS Motorsport. iND. HRE. Turner Motorsport. VAC. BMW Motorsport. Facebook | Instagram | Yelp! | Flikr Phone: 949-233-0448 | E-Mail: info@mrfengineering.com |
|
Appreciate
0
|
03-31-2009, 04:01 AM | #41 | |
Lieutenant General
310
Rep 13,114
Posts |
Quote:
|
|
Appreciate
0
|
03-31-2009, 11:54 AM | #42 | |
BimmerPost Supporting Vendor
8542
Rep 18,999
Posts
Drives: BMW
Join Date: Nov 2005
Location: Anaheim, CA
|
Quote:
__________________
Tom G. | european auto source (eas)
email: tom@europeanautosource.com · web: https://europeanautosource.com· tel 866.669.0705 · ca: 714.369.8524 x22 GET DAILY UPDATES ON OUR BLOG · FACEBOOK · YOUTUBE · FLICKR · INSTAGRAM |
|
Appreciate
0
|
04-03-2009, 07:56 PM | #43 |
First Lieutenant
39
Rep 387
Posts |
I got my Spacer's from EAS, 15mm front and 10mm rear.
They are quality pieces and really add to the OEM wheels. They truly help in making the car's stance look aggressive. I like the OEM wheels alot and I don't think I am going to invest in aftermarket wheels. My question-After adding the spacers-I noticed the car is handling a little differently in the turns. Would getting a alignment help in this case ? |
Appreciate
0
|
04-03-2009, 08:36 PM | #44 | |
Lieutenant General
310
Rep 13,114
Posts |
Quote:
yeah the spacers from EAS look sick and the oem 19's are amazing I didn't like them at first...then I saw them in person and my jaw dropped amazing... |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|