BMW X3 Forum
BMW X3 Forum
Welcome to the ultimate BMW X3 community.
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Post Reply
 
Thread Tools Search this Thread
      10-30-2018, 04:23 AM   #1
JensM
Private First Class
Germany
64
Rep
160
Posts

Drives: BMW X4 M40D 2019
Join Date: Mar 2012
Location: Flensburg

iTrader: (0)

Winter tires X4 F26/ X3 F25

Advise needed.
Got an X4 F26 30D 2015.
Need to have new winter tires - 19": 245/45 and 275/40.
Currently Pirelli Sottozero2 Runflat *marked (BMW approved).
I'm only going for premium tires and this leaves the opportunities quite limited having the size combo in mind - I can live with non-runflat.
Please note I'm located in Europe.

I have found this combo:
245/45/19: Pirelli W 240 SottoZero S2 runflat 245/45 R19 102V XL* (* = BMW approved - do only exist as runflat) @ 260Euro
275/40/19: Pirelli W 240 SottoZero S2 275/40 R19 105V XL MO (MO = Mercedes approved - this is a non-runflat) @ 194Euro

My question is: Tire pattern and technology seems same just one is runflat (front) and one is non-runflat (rear).
Will this be a problem for te Xdrive system?
- Or do I have to have same type in front and rear?
- The rear size in runflat cost hefty 431Euro each....so almost 500Euro extra...

Thanks in advance
JensM
Appreciate 0
      10-30-2018, 05:39 AM   #2
JensM
Private First Class
Germany
64
Rep
160
Posts

Drives: BMW X4 M40D 2019
Join Date: Mar 2012
Location: Flensburg

iTrader: (0)

Quote:
Originally Posted by JensM View Post
Advise needed.
Got an X4 F26 30D 2015.
Need to have new winter tires - 19": 245/45 and 275/40.
Currently Pirelli Sottozero2 Runflat *marked (BMW approved).
I'm only going for premium tires and this leaves the opportunities quite limited having the size combo in mind - I can live with non-runflat.
Please note I'm located in Europe.

I have found this combo:
245/45/19: Pirelli W 240 SottoZero S2 runflat 245/45 R19 102V XL* (* = BMW approved - do only exist as runflat) @ 260Euro
275/40/19: Pirelli W 240 SottoZero S2 275/40 R19 105V XL MO (MO = Mercedes approved - this is a non-runflat) @ 194Euro

My question is: Tire pattern and technology seems same just one is runflat (front) and one is non-runflat (rear).
Will this be a problem for te Xdrive system?
- Or do I have to have same type in front and rear?
- The rear size in runflat cost hefty 431Euro each....so almost 500Euro extra...

Thanks in advance
JensM
Actually just found this:
https://www.lesschwab.com/article/ca...dard-ones.html
"Run-flat tires (RFTs) are built with reinforced sidewalls, which make them a lot stiffer. This is why they can be driven between 50 and 100 miles (depending on the type) at about 50 mph with low or no air.

When there's a big difference between your front and rear tires' sidewall flex, your car's handling will be imbalanced. You won't have proper stability, especially when you need it most: around corners, at highway speeds and when swerving"

Seems like a No-Go
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 05:55 PM.




xbimmers
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