BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > Wheels / Tires -- Sponsored by The Tire Rack > Odd Tire Rack Results (or am I missing something)

Post Reply
 
Thread Tools Search this Thread
      11-17-2019, 03:18 PM   #1
dmf
New Member
United_States
29
Rep
22
Posts

Drives: M2 Competition DCT/BSM
Join Date: Jun 2018
Location: Mountain View, CA

iTrader: (0)

Odd Tire Rack Results (or am I missing something)

Hi All

About to grab a new set of RE-71Rs and wanting to step up to 255 fronts and 275 rears. I'm on the stock 788 wheels but do have camber plates installed with this being the results of most recent alignment (shouldn't be a problem from my reading).

So the odd thing is that when I search for the M2C (their By Vehicle option) in Tire Rack and select the factory option of 245/35-19 and 265/35-19 I get these results which include the Re-71R, which is expect and what i've been running on up until now.

Now if I backtrack to still using the Search by Vehicle, but instead specify custom sizes down the bottom and use 255/35/19 and 275/35/19 I get these results instead with the RE-71R seemingly missing.

Now if I instead go through searching by tire sizes directly (rather than by vehicle) I get these results which does include an RE-71R option

The stats of the 245/265 tires are
Front: 245/35R19 93W XL
Load Range: XL
Serv. Desc: 93W
UTQG: 200 A A
Rear: 265/35R19 98W XL
Load Range: XL
Serv. Desc: 98W
UTQG: 200 A A

and the stats of the 255/275 I find manually are
Front: 255/35R19 96W XL
Load Range: XL
Serv. Desc: 96W
UTQG: 200 A A
Rear: 275/35R19 96W
Serv. Desc: 96W
UTQG: 200 A A

So it looks like the only difference is the load index where the rear 265 tires are 98, so 750kg per tire whereas the 275 is 96, which is 710kg per tire. Does that actually present a problem? By chance any other attributes I've missed in the comparisons?
Appreciate 0
      11-19-2019, 07:13 PM   #2
SafariEdition
New Member
20
Rep
28
Posts

Drives: 2017 BMW M2
Join Date: Oct 2019
Location: Michigan

iTrader: (0)

Its because your car requires XL tires for load rating in most cases. The 275 rear is not an XL tire, so it automatically excludes it. With that being said, doing the math, that tire does meet the load requirement for the rear GAWR of the M2 Comp, so you would be fine to run it, its just not recommended.
__________________
2017 M2| I make poor decisions| Devin@tirerack.com ext 4197
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 11:18 AM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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