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

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques

Post Reply
 
Thread Tools Search this Thread
      07-05-2022, 01:20 PM   #1
Jeff80
New Member
9
Rep
15
Posts

Drives: F80 M3
Join Date: May 2021
Location: Gnarkansas

iTrader: (0)

325/660/18 On Rear

Anyone tried to jam this onto the rear on a proper wheel? I'm considering doing some experimenting if no one has tried it.

jeff
Appreciate 0
      07-12-2022, 09:00 PM   #2
sly1types
Captain
295
Rep
787
Posts

Drives: F80M3 and E46M3
Join Date: Apr 2007
Location: KC

iTrader: (0)

thats a lot of tire, i would try a 325/645/18 first.

I think it could fit though if you have your car high, there are some guys running 325/30/19s
__________________
F80 M3-DCT MaxPSI CH, BM3 with F80 Paul E85 and Custom Rom track tune MCS 2Way Remotes
Signature SV104
E46 M3
F85 X5M
https://www.instagram.com/fastmacm3/
Appreciate 0
      07-14-2022, 12:14 PM   #3
Jeff80
New Member
9
Rep
15
Posts

Drives: F80 M3
Join Date: May 2021
Location: Gnarkansas

iTrader: (0)

I've got them on now. About .5 inch shorter that stock wheel/tire combo but about 2 inches wider. They are pinched on my 11" wheel so I'll not be able to make the most of them but I'll eventually get them on a set of 18x12. I'll stuff one on the front too just to see what all it smashes and post up some pics.

jeff
Appreciate 1
David0ff1036.00
      07-20-2022, 07:07 PM   #4
Jeff80
New Member
9
Rep
15
Posts

Drives: F80 M3
Join Date: May 2021
Location: Gnarkansas

iTrader: (0)

320/660/18 on front with my standard street camber setting of around 2 degrees and an effective offset of +14. Dialed all the way in to 4 degrees this doesn't poke as much and sort of fits... sort of. I can drive on the streets with no issue but it looks like Charleton Heston's chariot. If I moved over the the GT4 uprights and arms (or aftermarket arms)I think it would be no issue at all to run this up front.





... and on the rear with all the rear camber that stock components will give. Effective offset is standard +44 but I have room to go to a +34 me thinks. Gonna stick a spacer on there to try later.





The tires are pinched on an 11 inch wheel. A 12 or 12.5 would be much better but I wanted to experiment. I'll dig up some 12's and try those. I'd rather mess with maximizing mechanical grip before trying to figure what aero actually works in the rear of these cars. We have a definitive solution for the front, but since I dont like giant wings I'd have to dig up a flat floor and diffuser design that's tried and true. I'm sure it's out there.

jeff
Appreciate 2
David0ff1036.00
      07-21-2022, 11:19 AM   #5
sly1types
Captain
295
Rep
787
Posts

Drives: F80M3 and E46M3
Join Date: Apr 2007
Location: KC

iTrader: (0)

wow! those look meaty, let us know how they perform and if there is any lap time to be gained.
__________________
F80 M3-DCT MaxPSI CH, BM3 with F80 Paul E85 and Custom Rom track tune MCS 2Way Remotes
Signature SV104
E46 M3
F85 X5M
https://www.instagram.com/fastmacm3/
Appreciate 0
      07-22-2022, 05:16 PM   #6
Alexander13.
Private
37
Rep
71
Posts

Drives: F80 ZCP Ind.
Join Date: Aug 2019
Location: Australia

iTrader: (0)

Following to see how you go with the rear and a 325/660/18. I have pulled my arches 10mm to fit a bigger offset wheel but the want to go fast with a meaty tyre has got the best of me
Appreciate 0
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



All times are GMT -5. The time now is 07:41 AM.




f80post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
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