BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Wheels + Tires Sponsored by The Tire Rack
  TireRack

KEEP M3POST ALIVE BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER LINK!
Post Reply
 
Thread Tools Search this Thread
      02-06-2014, 11:25 AM   #1
FogCityM3
Lieutenant Colonel
 
FogCityM3's Avatar
 
Drives: M3 (E90)
Join Date: Feb 2012
Location: San Francisco

Posts: 1,564
iTrader: (0)

Advice on ATS Superlights/Tire sizes 19inch

Looking into getting these wheels from Europe. Would the following offsets be too aggressive (particularly front) and what tires sizes would work:

F: 9.0x19 ET 20
R: 10.0x19 ET 20

Thx in advance
FogCityM3 is offline  
0
Reply With Quote
      02-06-2014, 12:02 PM   #2
slicer
Brigadier General
 
slicer's Avatar
 
Drives: '13 E92 M3
Join Date: Jan 2009
Location: San Diego, CA

Posts: 3,743
iTrader: (12)

OEM ZCP wheels have the following specs:

F: 9.0x19 ET 31
R: 10.0x19 ET 25

People run 12 mm spacers front and rear fairly regularly (effective front offset of et19 and rear offset of et13). See this thread:
http://www.m3post.com/forums/showthr...ghlight=spacer

I would stick with 255/35/19 & 275/35/19 tires. The front may rub a little on the back of the fender liner at full lock.
__________________
KW Clubsport 3-way, Akrapovic Evolution, ESS Tune, StopTech Trophy, IND Euro Bumper & Black Mirror Covers, Turner Motorsports Studs/Lugs & Delrin Diff Bushings, MRF Solid Sub-Frame Bushings, RD Sport Sways, Recaro Profi-XL & Planted Seat Brackets, BMW Performance Carbon Fiber Interior Trim, BMW Edition Grills/Gills, Mode Carbon GT4 Splitter & GTS Wing, Advan TC3 (18x9.5/10.5), BBS E05 (18x10/11), G-Force Rivals (275/295)
slicer is offline  
0
Reply With Quote
      02-06-2014, 12:32 PM   #3
Z K
Colonel
 
Z K's Avatar
 
Drives: E90 M3
Join Date: Jul 2011
Location: San Francisco

Posts: 2,110
iTrader: (3)

Quote:
Originally Posted by slicer View Post
OEM ZCP wheels have the following specs:

F: 9.0x19 ET 31
R: 10.0x19 ET 25

People run 12 mm spacers front and rear fairly regularly (effective front offset of et19 and rear offset of et13). See this thread:
http://www.m3post.com/forums/showthr...ghlight=spacer

I would stick with 255/35/19 & 275/35/19 tires. The front may rub a little on the back of the fender liner at full lock.
I mentioned in that thread that I rub in back with just 10mm spacers on stock size 265/40R18 PSS tires lowered on KW V3. With ZCP wheels, you will rub like crazy. So take what people say with a grain of salt.
__________________
Auto Detailing Enthusiast!
Z K is offline   United_States
0
Reply With Quote
      02-06-2014, 01:14 PM   #4
slicer
Brigadier General
 
slicer's Avatar
 
Drives: '13 E92 M3
Join Date: Jan 2009
Location: San Diego, CA

Posts: 3,743
iTrader: (12)

Quote:
Originally Posted by Z K View Post
I mentioned in that thread that I rub in back with just 10mm spacers on stock size 265/40R18 PSS tires lowered on KW V3. With ZCP wheels, you will rub like crazy. So take what people say with a grain of salt.
You must not have any negative camber. I ran 12mm spacers on my OEM 18" wheels/tires without problems on two different M3's (one with Eibach springs and one with KW Clubsports).

Keep in mind that ZCP wheels are wider which will stretch tires more than your 9.5" wheels.

I have also ran 295/30/19 tires on 10" et25 wheels without rubbing. I tried 5mm spacers with those wheels/tires (effective et20) and they did rub slightly (again with 295 tires). That was with KW clubsports and yokohama AD08's which run very wide. I don't recommend 295's on a 10" wheel.

Lastly the OP is asking about 10" et20 wheels which is very different from 10" et13 (ZCP wheel with a 12mm spacer). The OP will not have any issues with 275's on 10" et20 wheels.

I didn't shoot from the hip on my recommendation.... I sent the OP the thread as an example of how he could have figured this out on his own. I could have just said "do a search" but I decided to be more helpful.
__________________
KW Clubsport 3-way, Akrapovic Evolution, ESS Tune, StopTech Trophy, IND Euro Bumper & Black Mirror Covers, Turner Motorsports Studs/Lugs & Delrin Diff Bushings, MRF Solid Sub-Frame Bushings, RD Sport Sways, Recaro Profi-XL & Planted Seat Brackets, BMW Performance Carbon Fiber Interior Trim, BMW Edition Grills/Gills, Mode Carbon GT4 Splitter & GTS Wing, Advan TC3 (18x9.5/10.5), BBS E05 (18x10/11), G-Force Rivals (275/295)

Last edited by slicer; 02-06-2014 at 01:28 PM.
slicer is offline  
0
Reply With Quote
      02-06-2014, 02:38 PM   #5
FogCityM3
Lieutenant Colonel
 
FogCityM3's Avatar
 
Drives: M3 (E90)
Join Date: Feb 2012
Location: San Francisco

Posts: 1,564
iTrader: (0)

Thx a lot, this was very helpful and appreciate the guidance!


Quote:
Originally Posted by slicer View Post
.... I sent the OP the thread as an example of how he could have figured this out on his own. I could have just said "do a search" but I decided to be more helpful.
FogCityM3 is offline  
0
Reply With Quote
      02-06-2014, 02:51 PM   #6
Z K
Colonel
 
Z K's Avatar
 
Drives: E90 M3
Join Date: Jul 2011
Location: San Francisco

Posts: 2,110
iTrader: (3)

I have -2.5 degrees of rear negative camber. I was rubbing even with maxed out rear camber (-2.75). The only fix was to remove the spacer or cut the rear fender liner. The shop tested this by disconnecting the rear shock and compressing the wheel upward with a floor jack. The wheel contacts the fender liner.

I will say that it rarely rubbed on normal street driving but it was rubbing badly on track and cutting the tire sidewall. Also the PSS is wider/more square than the stock PS2 which did not rub.

So no, I can not recommend any spacer 10mm or bigger if you are running non-stock tires and is lowered unless you want to modify your fender liner.

Quote:
Originally Posted by slicer View Post
You must not have any negative camber. I ran 12mm spacers on my OEM 18" wheels/tires without problems on two different M3's (one with Eibach springs and one with KW Clubsports).

Keep in mind that ZCP wheels are wider which will stretch tires more than your 9.5" wheels.

I have also ran 295/30/19 tires on 10" et25 wheels without rubbing. I tried 5mm spacers with those wheels/tires (effective et20) and they did rub slightly (again with 295 tires). That was with KW clubsports and yokohama AD08's which run very wide. I don't recommend 295's on a 10" wheel.

Lastly the OP is asking about 10" et20 wheels which is very different from 10" et13 (ZCP wheel with a 12mm spacer). The OP will not have any issues with 275's on 10" et20 wheels.

I didn't shoot from the hip on my recommendation.... I sent the OP the thread as an example of how he could have figured this out on his own. I could have just said "do a search" but I decided to be more helpful.
__________________
Auto Detailing Enthusiast!
Z K is offline   United_States
0
Reply With Quote
      02-06-2014, 03:08 PM   #7
slicer
Brigadier General
 
slicer's Avatar
 
Drives: '13 E92 M3
Join Date: Jan 2009
Location: San Diego, CA

Posts: 3,743
iTrader: (12)

Interesting. Your situation seems very odd, especially with that much camber. It just doesn't add up for me. Are you positive your spacer was 10mm? I could see this happening with a 15mm spacer. Also testing with a disconnected shock doesn't seem like a good method. How can you be sure your suspension geometry was consistent with one of the key components disconnected? I think I could make anything rub if I removed the shocks.... Not trying to insult.
__________________
KW Clubsport 3-way, Akrapovic Evolution, ESS Tune, StopTech Trophy, IND Euro Bumper & Black Mirror Covers, Turner Motorsports Studs/Lugs & Delrin Diff Bushings, MRF Solid Sub-Frame Bushings, RD Sport Sways, Recaro Profi-XL & Planted Seat Brackets, BMW Performance Carbon Fiber Interior Trim, BMW Edition Grills/Gills, Mode Carbon GT4 Splitter & GTS Wing, Advan TC3 (18x9.5/10.5), BBS E05 (18x10/11), G-Force Rivals (275/295)
slicer is offline  
0
Reply With Quote
      02-06-2014, 03:23 PM   #8
Z K
Colonel
 
Z K's Avatar
 
Drives: E90 M3
Join Date: Jul 2011
Location: San Francisco

Posts: 2,110
iTrader: (3)

Quote:
Originally Posted by slicer View Post
Interesting. Your situation seems very odd, especially with that much camber. It just doesn't add up for me. Are you positive your spacer was 10mm? I could see this happening with a 15mm spacer. Also testing with a disconnected shock doesn't seem like a good method. How can you be sure your suspension geometry was consistent with one of the key components disconnected? I think I could make anything rub if I removed the shocks.... Not trying to insult.
I had the shop help me find where it was rubbing after I noticed the rubbing. They did it that way to find out. The suspension geometry is the same as the wheel/brake assembly is held on by the arms. Disconnecting/removing the shock just allows the wheel to move more freely since it is not compressing the shock.

As for why mine rubs, I have no idea. I mentioned this in another thread and others have mentioned they have rubbing problems too.
__________________
Auto Detailing Enthusiast!
Z K is offline   United_States
0
Reply With Quote
      02-12-2014, 11:46 PM   #9
FogCityM3
Lieutenant Colonel
 
FogCityM3's Avatar
 
Drives: M3 (E90)
Join Date: Feb 2012
Location: San Francisco

Posts: 1,564
iTrader: (0)

Interestingly, I contacted ATS and they said that there would definitely be rubbing with the Superlight 9.0x19 ET 20 front wheels. They actually had a customer with that issue on their M3 with the wheel who ended up widening the front fenders. May be the case with certain tire combo that there would be some rubbing, but nice to see them be honest and not try to make the quick sale. Too bad, as they are really nice wheels.

Thx again.

Quote:
Originally Posted by slicer View Post
OEM ZCP wheels have the following specs:

F: 9.0x19 ET 31
R: 10.0x19 ET 25

People run 12 mm spacers front and rear fairly regularly (effective front offset of et19 and rear offset of et13). See this thread:
http://www.m3post.com/forums/showthr...ghlight=spacer

I would stick with 255/35/19 & 275/35/19 tires. The front may rub a little on the back of the fender liner at full lock.
FogCityM3 is offline  
0
Reply With Quote
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Forum Jump


All times are GMT -5. The time now is 08:28 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST