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
      10-02-2008, 12:08 PM   #1
mightyaa
Private
2

 
Drives: E90 M3
Join Date: Jul 2008
Location: Denver


Posts: 70
iTrader: (0)

Will it fit? Auto-x options..

Iím looking at autocross tires because it sort of effects my winter setup.

Due to SCCA rules, I have to use stock sized wheels. So Iíve got 19x8.5 on the front, and 19x9.5 on the rear without buying new wheels. I was waffling around getting a 18" setup and using the stock 19" wheels for summer, but I really donít like the 18" wheel options out there atm and the auto-x tire size options is also pretty bad. So Iím now looking at 20" summer wheels and using the 19" for winter/race.

Iím rather limited to Hoosier A6 if I keep the 19" wheels. Iíve seen multiple other racers squeeze wider tires onto narrow rims, but theyíve always been much smaller wheels with a lot more sidewall to work with. Can a low profile tire be pinched onto a wheel Ĺ" narrower than the recommended size?

The 265/35zr19 is what Iím looking at stuffing under the front end. Recommend rim size for the tire is 9"-10". Stock PS2 size is the 2nd number: Height is 25.6" (25.8"), tread width is 9.6"(NA), tire max width is 10.4"(9.8"), and at the rim itís 9" wide (8.5").
For the rears I was eyeballing the 295/30zr19 that recommends a 10"-12" wheel. Same issues there, but at least I could step down to a 265 whereas the front only other option is a 235/35r19.

Opinions on whether it will work?
Appreciate 0
      10-04-2008, 02:37 AM   #2
sayemthree
Brigadier General
125

 
sayemthree's Avatar
 
Drives: bmw
Join Date: Aug 2007
Location: usa


Posts: 4,845
iTrader: (0)

if you went with 18's with the BFG r1 in 265 front and 285 rear I think you would have a winnig combo.
Appreciate 0
      10-04-2008, 01:15 PM   #3
mightyaa
Private
2

 
Drives: E90 M3
Join Date: Jul 2008
Location: Denver


Posts: 70
iTrader: (0)

Quote:
Originally Posted by sayemthree View Post
if you went with 18's with the BFG r1 in 265 front and 285 rear I think you would have a winnig combo.
Thanks, but it still has the same issue (but at least gives a bit more sidewall with 18"). Can a 265 stretch over a 8.5" wheel?

Also, the R1's are a track tire. Bad choice for autocross since they'll stay cold and never reach their potential. 18" wheels also have another couple weird issues. Autocross compound tire selections are worse than you find in 19" sizes for us. 245's or 285's with nothing in between. 18" wheel selections are also rather lacking for something I'd want to drive on half the year when winter tires get mounted on them.
Appreciate 0
      10-05-2008, 02:40 AM   #4
BMW MotorSport
Banned
39

 
Drives: 95 Avus M3 and 07 E90 Fam Car!
Join Date: Nov 2006
Location: So Cal, Simi Valley


Posts: 2,533
iTrader: (4)

Send a message via Yahoo to BMW MotorSport
YES the 265 will work fine on a 8.5 rim. I have that combo on my E36 m3.
Appreciate 0
      10-05-2008, 03:08 AM   #5
Bob@BPS
United_States
10

 
Bob@BPS's Avatar
 
Drives: 2013 BMW 328
Join Date: Nov 2005
Location: Camarillo, CA


Posts: 298
iTrader: (1)

BFG R1s

Quote:
Originally Posted by sayemthree View Post
if you went with 18's with the BFG r1 in 265 front and 285 rear I think you would have a winnig combo.
That's a GREAT combo, and an excellent suggestion. I have a set of BFG R1s in those sized on a set of Volk TE37s. I'm about to find out if they will fit over my new Brembo 380 6/4 piston BBK.

Bob
Appreciate 0
      10-11-2008, 01:28 AM   #6
sayemthree
Brigadier General
125

 
sayemthree's Avatar
 
Drives: bmw
Join Date: Aug 2007
Location: usa


Posts: 4,845
iTrader: (0)

the BFG comes up to temp pretty quick. what do you want street tires?
Appreciate 0
      10-12-2008, 12:40 AM   #7
mightyaa
Private
2

 
Drives: E90 M3
Join Date: Jul 2008
Location: Denver


Posts: 70
iTrader: (0)

Quote:
Originally Posted by sayemthree View Post
the BFG comes up to temp pretty quick. what do you want street tires?
No, big difference between track and autocross compounds. With autocross, it gets up to temp in less than the 50 second runs (5 minute minimum between runs). A track tire will barely get warm and aren't that much better than a really good street tire... they need a few track laps to generate enough heat and are tough enough to last whereas auto-x tires will get burned up fast at a track..
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
Forum Jump


All times are GMT -5. The time now is 04:13 PM.




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