M5POST
BMW Garage BMW Meets Register Today's Posts

Go Back   M5POST - BMW M5 Forum > F10 M5 Forum > Wheels | Tires | Suspension | Brakes | Chassis

Post Reply
 
Thread Tools Search this Thread
      08-25-2014, 08:30 PM   #1
RT SYD UP
Enlisted Member
RT SYD UP's Avatar
6
Rep
33
Posts

Drives: 2013 F10 M5
Join Date: Dec 2012
Location: Chicago

iTrader: (0)

21 inch sidewall height

I "upgraded" to a 21 inch vorsteiner on my 2014 CP. It has 265/25/21 F & 295/25/21 R. The ride is good but they are incredibly easy to rash or nick from the slightest pavement imperfection. Could I step the sidewall height/percentage up. Any recommendations or is this the breaks of a 21.

Thanks
Appreciate 0
      08-25-2014, 08:35 PM   #2
HXS
Licensed Drug Dealer
HXS's Avatar
United_States
742
Rep
2,269
Posts

Drives: F10 M5
Join Date: Oct 2010
Location: SoCal

iTrader: (7)

Are you sure the fronts are 25 series?

Members usually use 265/30/21 up front.
Appreciate 0
      08-25-2014, 09:10 PM   #3
SSR
Private
SSR's Avatar
6
Rep
76
Posts

Drives: F10 m5
Join Date: Oct 2012
Location: America

iTrader: (0)

I have rear 305 25 21 no rubbing etc
Appreciate 0
      08-26-2014, 10:08 AM   #4
mwlmd
Lieutenant Colonel
mwlmd's Avatar
United_States
187
Rep
1,548
Posts

Drives: Porsche 991 TTS
Join Date: May 2009
Location: Portland, OR

iTrader: (0)

I run 265/30/21 F 305/25/21 R

As mentioned your front doesn't sound correct and you can go wider in the rear.
__________________
CURRENT:
His: Porsche 991 Turbo S
Carrera white/Black
Hers: BMW X3MC
BSM/Black
Appreciate 0
      08-26-2014, 10:55 AM   #5
Poleposition
~~~~~~~~~~~~~
Poleposition's Avatar
United_States
512
Rep
1,437
Posts

Drives: very well
Join Date: Sep 2008
Location: NY

iTrader: (2)

Should be a 30 sidewall in front. Rear sidewall should be 25 and you can do a 305 width in rear. Highly recommended.
__________________
2022 Individual M5 Comp
Venetian Violet
2021 X6M Comp
2024 i4 M50 on order

IG @purpleM5Comp_NY
Appreciate 0
      08-26-2014, 03:38 PM   #6
HXS
Licensed Drug Dealer
HXS's Avatar
United_States
742
Rep
2,269
Posts

Drives: F10 M5
Join Date: Oct 2010
Location: SoCal

iTrader: (7)

The problem now is trying to find a Michelin PSS in the 305/25 size!
Appreciate 0
      08-28-2014, 05:01 PM   #7
greentrbo95gst
Brigadier General
greentrbo95gst's Avatar
1231
Rep
4,106
Posts

Drives: 21 M5 Comp
Join Date: Jan 2011
Location: Orange County

iTrader: (6)

Quote:
Originally Posted by HXS View Post
The problem now is trying to find a Michelin PSS in the 305/25 size!
impossible. Discontinued. I think I bought the last two in the country as I called over 50 different distribution centers.
__________________
Current: 21 M5 Comp, 17 X5M, 06 M3, 14 Ferrari FF, Tesla Model S Performance.
Appreciate 0
      08-30-2014, 01:06 PM   #8
RT SYD UP
Enlisted Member
RT SYD UP's Avatar
6
Rep
33
Posts

Drives: 2013 F10 M5
Join Date: Dec 2012
Location: Chicago

iTrader: (0)

You guys are right. It is a 30 up front.
Appreciate 0
      09-04-2014, 02:30 PM   #9
///M3THOD
Lieutenant Colonel
///M3THOD's Avatar
United_States
117
Rep
1,625
Posts

Drives: 991.2 GTS
Join Date: Dec 2009
Location: ATL

iTrader: (30)

Quote:
Originally Posted by greentrbo95gst View Post
impossible. Discontinued. I think I bought the last two in the country as I called over 50 different distribution centers.
Anyone have any advice on this.. I am about to pick up some 21's that will require the 305/25 size.

I cannot find any tires and even if I do, where will I source them when its time to put new ones on?
Appreciate 0
      09-05-2014, 09:07 PM   #10
HXS
Licensed Drug Dealer
HXS's Avatar
United_States
742
Rep
2,269
Posts

Drives: F10 M5
Join Date: Oct 2010
Location: SoCal

iTrader: (7)

^ you probably have to switch over to the Pirelli P Zero for that size.
Appreciate 0
      10-14-2014, 05:40 PM   #11
MEMMEZZ
Captain
United_States
71
Rep
752
Posts

Drives: MR.E92
Join Date: Nov 2006
Location: Los Angeles

iTrader: (6)

Does anyone know if you can do 305/30/21 in the rear without rubbing. Or it has to be either 305/25 or 295/30?
Appreciate 0
      10-19-2014, 04:06 PM   #12
BIGW0RM
You got my money?
BIGW0RM's Avatar
No_Country
3132
Rep
4,640
Posts

Drives: Ice Cream Truck
Join Date: Jul 2011
Location: ///OC

iTrader: (14)

Garage List
2022 BMW M3  [9.50]
Quote:
Originally Posted by MEMMEZZ View Post
Does anyone know if you can do 305/30/21 in the rear without rubbing. Or it has to be either 305/25 or 295/30?
You over here from m3 post too? : )
Appreciate 0
Post Reply

Bookmarks


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 07:09 PM.




m5post
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