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
      03-03-2008, 07:19 PM   #1
rzm3
Moderator
 
rzm3's Avatar
 
Drives: E92 M3
Join Date: Aug 2007
Location: USA

Posts: 4,600
iTrader: (14)

Arrow Pilot Sport Cup Fitment Question

So, I am considering track tires for my M3. A lot of people here mentioned the Cups, so I did a little research.

The Concept M3 came with 19" CSL + Cups:

Front: 235/35/19
Rear: 265/30/19


However, the OE 19s come with:

Front: 245/35/19
Rear: 265/35/19


So, using the tire diameter calculator, I computed the difference between OE and Cups:

Front: -4.891%
Rear: -4.13%


So, my question is: is such a big difference in diameter still going to be ok on the M3? Tire rack recommends deviating within 3% of the OE diameter.

Moreover, for 19" wheels, Cups only come in:

235/35/19
265/30/19
305/30/19
325/30/19

Thus, the 235 front and 265 rear seem to be the only possible choices for Cups to be used on the M3. There is a big difference in diameter on possible 18" wheels+tires also.

Advice? Comments?
Attached Images
  
__________________
E92 M3 DCT - AiM EVO4 Data Logger / AiM SmartyCam HD / KW Competition 2-Way / OMP ARS Racing Seats / Brembo GT 365 / Pagid Yellow RS-29 / Rear Seats Delete
rzm3 is offline  
0
Reply With Quote
      03-03-2008, 09:35 PM   #2
Gearhead999s
Major General
 
Gearhead999s's Avatar
 
Drives: E93 335is(wifes)E92 M3
Join Date: Apr 2007
Location: Toronto

Posts: 6,685
iTrader: (0)

I have the same dilema and I have settled on going with an 18" setup with the New Toyo R888 for trackday & Solo 1 use.

http://www.toyo.com/docs/tires/tires...category=sport

I will be using 255/35-18's which are 25.1" high for the fronts
265/35-18 25.4" rears

At least this combination will retain some of the stagger of the stock setup and will lower the tall stock gearing by a little bit.I am still checking on the availability of the tires as Toyo in Canada has never been great at supplying "funny" sizes in the performance tire line.Once I know I will start working on a wheel setup.
Failing this I will probally just run 245/40 - 18's all the way round and least I will be able to get the back around to come around!I want to run the Toyo's as they support Grassroot Motorsports big time in our region.
Gearhead999s is offline  
0
Reply With Quote
      03-03-2008, 11:05 PM   #3
GregW / Oregon
Commander-In-Chief
 
Drives: 2015 M4 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

Posts: 7,348
iTrader: (1)

Garage List
Michelin Pilot Sprt Cup+ sizes

Quote:
Originally Posted by rldzhao View Post
So, I am considering track tires for my M3. A lot of people here mentioned the Cups, so I did a little research.

The Concept M3 came with 19" CSL + Cups:

Front: 235/35/19
Rear: 265/30/19


However, the OE 19s come with:

Front: 245/35/19
Rear: 265/35/19


....

Moreover, for 19" wheels, Cups only come in:

235/35/19
265/30/19
305/30/19
325/30/19

Thus, the 235 front and 265 rear seem to be the only possible choices for Cups to be used on the M3. There is a big difference in diameter on possible 18" wheels+tires also.

Advice? Comments?
The stock 245/35 & 265/35 R 19 Sport Cup+ are offered. The difference is in the +. In fact, they are the only 19" sizes offered, and were likely developed for the M3. Probably were not available when the Concept was released, and probably not available in the US yet. It'd be worth waiting for the right size. See the chart here:

http://www.michelin.co.uk/uk/front/a...20080128103043
__________________

Greg Lake Oswego, Oregon, USA
2015 M4 Coupe - Silverstone/Sakhir/CF
2012 ML350
GregW / Oregon is offline   United_States
0
Reply With Quote
      03-03-2008, 11:18 PM   #4
rzm3
Moderator
 
rzm3's Avatar
 
Drives: E92 M3
Join Date: Aug 2007
Location: USA

Posts: 4,600
iTrader: (14)

ic. they are listed as XL on the US web site. thanks for the info.

http://www.michelinman.com/tires/ult...lot-sport-cup/
__________________
E92 M3 DCT - AiM EVO4 Data Logger / AiM SmartyCam HD / KW Competition 2-Way / OMP ARS Racing Seats / Brembo GT 365 / Pagid Yellow RS-29 / Rear Seats Delete
rzm3 is offline  
0
Reply With Quote
      03-04-2008, 09:28 PM   #5
sayemthree
Brigadier General
 
sayemthree's Avatar
 
Drives: bmw
Join Date: Aug 2007
Location: usa

Posts: 4,844
iTrader: (0)

ideal would be 265 all around. 4% change in diameter should be fine for the track.
sayemthree is offline  
0
Reply With Quote
      03-04-2008, 09:52 PM   #6
rzm3
Moderator
 
rzm3's Avatar
 
Drives: E92 M3
Join Date: Aug 2007
Location: USA

Posts: 4,600
iTrader: (14)

anyone know where i can get CSL wheels with M3 fitment? (i know i can use spacers but trying to avoid them)
__________________
E92 M3 DCT - AiM EVO4 Data Logger / AiM SmartyCam HD / KW Competition 2-Way / OMP ARS Racing Seats / Brembo GT 365 / Pagid Yellow RS-29 / Rear Seats Delete
rzm3 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 08:34 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