European Auto Source (EAS)
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
      01-05-2021, 02:34 PM   #89
fanatic1
Captain
fanatic1's Avatar
United_States
1019
Rep
859
Posts

Drives: 2019 M4 CS
Join Date: Sep 2010
Location: Encinitas/San Diego

iTrader: (1)

Garage List
2019 M4CS  [0.00]
Quote:
Originally Posted by fanatic1 View Post
Clearance is an issue with the ride height I’m running on the MCS 1W
This is the square set up ET36 with a 15mm spacer upfront.

Would love to try something close to an ET25, which should require only a small space or upfront.

-2.7° of camber in the rear definitely offers plenty of clearance.
Appreciate 0
      01-05-2021, 02:35 PM   #90
bimmerboyE92
Captain
United_States
412
Rep
737
Posts

Drives: BMW
Join Date: Oct 2014
Location: Louisville, KY

iTrader: (4)

Garage List
Quote:
Originally Posted by fanatic1 View Post
Clearance is an issue with the ride height I’m running on the MCS 1W
Are you saying you rub when lowered with the 295/30-18s? I read the comment from someone above about the diff not liking a short tire. Are you experiencing anything like that?
Appreciate 0
      01-05-2021, 02:37 PM   #91
fanatic1
Captain
fanatic1's Avatar
United_States
1019
Rep
859
Posts

Drives: 2019 M4 CS
Join Date: Sep 2010
Location: Encinitas/San Diego

iTrader: (1)

Garage List
2019 M4CS  [0.00]
Quote:
Originally Posted by bimmerboyE92 View Post
Are you saying you rub when lowered with the 295/30-18s? I read the comment from someone above about the diff not liking a short tire. Are you experiencing anything like that?
Just clarified the previous post, ground clearance, not fender, strut or any other body part.

I read that post as well and wanted to ask what he means by that diff not likin the shorter tire. I have never experienced that, maybe at very slow speed.
Appreciate 0
      01-05-2021, 03:02 PM   #92
bimmerboyE92
Captain
United_States
412
Rep
737
Posts

Drives: BMW
Join Date: Oct 2014
Location: Louisville, KY

iTrader: (4)

Garage List
Quote:
Originally Posted by fanatic1 View Post
Just clarified the previous post, ground clearance, not fender, strut or any other body part.

I read that post as well and wanted to ask what he means by that diff not likin the shorter tire. I have never experienced that, maybe at very slow speed.
Ride height defined the way it's supposed to be defined! Thank you! Only concerned on track. This car is no longer driven on the street. Are you scraping on curbing on track? Or just for street use? When running Pirelli DH 285/645-18 up front, I'm not having any issues on track. The DH are 25.4" tall where the 295/30 are 25" tall so just under 1/4" lower ride height.
Appreciate 0
      01-05-2021, 03:08 PM   #93
bimmerboyE92
Captain
United_States
412
Rep
737
Posts

Drives: BMW
Join Date: Oct 2014
Location: Louisville, KY

iTrader: (4)

Garage List
The other option is to go with 295/30-19 tires that the AR1s, RRs, and other street tires available. But then running Pirelli scrubs because an issue as 19" sizes are quite limited.
Appreciate 0
      01-05-2021, 03:35 PM   #94
fanatic1
Captain
fanatic1's Avatar
United_States
1019
Rep
859
Posts

Drives: 2019 M4 CS
Join Date: Sep 2010
Location: Encinitas/San Diego

iTrader: (1)

Garage List
2019 M4CS  [0.00]
Quote:
Originally Posted by bimmerboyE92 View Post
Quote:
Originally Posted by fanatic1 View Post
Just clarified the previous post, ground clearance, not fender, strut or any other body part.

I read that post as well and wanted to ask what he means by that diff not likin the shorter tire. I have never experienced that, maybe at very slow speed.
Ride height defined the way it's supposed to be defined! Thank you! Only concerned on track. This car is no longer driven on the street. Are you scraping on curbing on track? Or just for street use? When running Pirelli DH 285/645-18 up front, I'm not having any issues on track. The DH are 25.4" tall where the 295/30 are 25" tall so just under 1/4" lower ride height.
Quote:
Originally Posted by bimmerboyE92 View Post
Quote:
Originally Posted by fanatic1 View Post
Just clarified the previous post, ground clearance, not fender, strut or any other body part.

I read that post as well and wanted to ask what he means by that diff not likin the shorter tire. I have never experienced that, maybe at very slow speed.
Ride height defined the way it's supposed to be defined! Thank you! Only concerned on track. This car is no longer driven on the street. Are you scraping on curbing on track? Or just for street use? When running Pirelli DH 285/645-18 up front, I'm not having any issues on track. The DH are 25.4" tall where the 295/30 are 25" tall so just under 1/4" lower ride height.
No issues on track, just those driveways etc.
Appreciate 0
      02-19-2021, 05:44 PM   #95
sly1types
Captain
427
Rep
934
Posts

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

iTrader: (0)

Quote:
Originally Posted by RSXDC5 View Post
F: 19x10.5 +20 (recently I’ve been experimenting with a 5mm spacer for an effective offset of +15 in order to have additional tire-to-strut clearance while on track. I’ve never had an issue, just being extra safe)
R: 19x11.5 +44

On 305/30/19 Nankang AR1. (When I have street tires mounted it’s usually a 295/305 stagger). Nankang is releasing their 325/30/19 AR-1 in a week or two, so I’ll be moving away from the 305 squared to a 305/325 stagger. Tons of room in the rear to accommodate, and to be honest, I really need the extra grip when powering out of corners (F80Paul Ethanol tune)

-3 front camber
-2 rear camber
RSXDC5

Wow this is awesome, you are the first person i have seen running 305 square. What size springs do you have? helpers? Any rubbing? did you have to modify anything else? I have a set of signatures i got before i decided to turn this car into my track car that are 19x9.5" and 19x11", but i might have to order another set or just get some Apex SM10s. I just ordered MCS 2way remotes with 700F/600R 2.25" springs with helpers and ground control camper plates.
__________________
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/

Last edited by sly1types; 02-19-2021 at 06:15 PM..
Appreciate 2
      07-27-2021, 06:12 PM   #96
jmg
Lieutenant General
jmg's Avatar
18493
Rep
14,085
Posts

Drives: G82 M4C X-Drive
Join Date: Mar 2013
Location: Orange County, CA

iTrader: (1)

Garage List
2022 G82 M4C X-Drive  [9.83]
2018 F80 M3 CS  [9.83]
2019 i3 BEV  [0.00]
Quote:
Originally Posted by fanatic1 View Post
I have the AR1 295/315 (run small) on the car now and coming off of Yoko A052 in 265/295. The Yoko were very fast and was not disappointed with wear rate. Someone here runs A052 in 295/315, but seems big for 10/11”.

Next track day isn’t until early September, will report on AR1
How do the AR1's compare to the A052's? I'm looking to find a replacement for my RE71R's. How fast do the AR1's heat up for autocross? How do they compare with regards to wear? Essentially, I'm looking for a tire that will last me to the end of the year, 1 track day a month plus 1 time attack a month on a gokart track.
__________________

2022 G82///M4 Competition X-Drive - KW-HAS, EBC Bluestuff, Millway Race Camber Plates, Cup2 Connect*, PSI High Flow Midpipe, Lightweight Front Lip, M Perf Flow Through Wing
Previous • 2018 F80 ///M3 CS • 2016 F80 ///M3
IG: Raging_G82
Appreciate 0
      07-27-2021, 11:22 PM   #97
fanatic1
Captain
fanatic1's Avatar
United_States
1019
Rep
859
Posts

Drives: 2019 M4 CS
Join Date: Sep 2010
Location: Encinitas/San Diego

iTrader: (1)

Garage List
2019 M4CS  [0.00]
Quote:
Originally Posted by jmg View Post
Quote:
Originally Posted by fanatic1 View Post
I have the AR1 295/315 (run small) on the car now and coming off of Yoko A052 in 265/295. The Yoko were very fast and was not disappointed with wear rate. Someone here runs A052 in 295/315, but seems big for 10/11”.

Next track day isn’t until early September, will report on AR1
How do the AR1's compare to the A052's? I'm looking to find a replacement for my RE71R's. How fast do the AR1's heat up for autocross? How do they compare with regards to wear? Essentially, I'm looking for a tire that will last me to the end of the year, 1 track day a month plus 1 time attack a month on a gokart track.
You will likely prefer A052 for autocross and best lap times, AR1 are better for longevity
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 06:45 PM.




f80post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, 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