BMW 1-Series Forum (F20) 135i - 1Addicts.com > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > Semi slick tires for f20 M135i LCI?
Post Reply
 
Thread Tools Search this Thread
      08-19-2016, 04:26 PM   #1
RafaelDourado
Registered
1
Rep
1
Posts

Drives: 2015 BMW M135i
Join Date: Jun 2015
Location: Kiev

iTrader: (0)

Question Semi slick tires for f20 M135i LCI?

Hi All,

I've been doing a lot of track days lately and I'm looking for semi-slick, or track oriented but still road legal, tires.

My M135i has 245/35 R18 tires in the back, but from my research there are very few tire models in this size.

What are you guys using?

After the Michelin Pilot Super Sport that came with the car, I am now on a set of Federal 595RS-R. But they are not that much faster than the PSS and a lot less durable...

I wanted to try the Michelin Pilot Sport Cup 2, but the closest size is 245/40, witch is 4% bigger in circumference. Is that too much, or is it ok if I go with this size?

The speedometer/odometer gets its info from the front or rear tires?

Cheers.
Appreciate 0
      08-19-2016, 11:50 PM   #2
ovekvam
Brigadier General
Norway
266
Rep
3,290
Posts

Drives: 2021 Galvanic Gold i3S
Join Date: Jun 2012
Location: Bryne, Norway

iTrader: (0)

I would go for 235/40-18. Toyo R888 is a popular choice.
Appreciate 0
      08-21-2016, 05:57 AM   #3
Ben_M135i
Enlisted Member
2
Rep
35
Posts

Drives: 2013 M135i
Join Date: Sep 2014
Location: Western Australia

iTrader: (0)

I would suggest an Advan Neova AD08r for track and road rubber. Running a 245/40 shouldn't be much of an issue.
Appreciate 0
      08-22-2016, 02:25 AM   #4
Hoss1
New Member
6
Rep
17
Posts

Drives: 2014 F20 M135i
Join Date: Apr 2016
Location: Australia

iTrader: (0)

I imagine that the speedo drive will come from the gearbox (or perhaps the diff) so it is the rear tyres that will impact any change in the speedo accuracy.

There are tyre size calculator apps that will tell you the change in speedo accuracy. For example, a 245/35/18 to a 245/40/18 will mean the tyre diameter increases from 24.75" to 25.72". At 60mph the speedo will read 62.34mph.
Appreciate 0
      08-22-2016, 03:35 AM   #5
ovekvam
Brigadier General
Norway
266
Rep
3,290
Posts

Drives: 2021 Galvanic Gold i3S
Join Date: Jun 2012
Location: Bryne, Norway

iTrader: (0)

I think (also don't know for sure) the speedometer is based on DSC-sensors, where the computer estimates the actual vehicle speed based on rotation from all wheels, accelerometers and gyrometers.
Appreciate 0
      08-26-2016, 02:47 AM   #6
nelsonian101
Enlisted Member
13
Rep
38
Posts

Drives: FGXR6T, M140i
Join Date: Mar 2016
Location: Sydney

iTrader: (0)

Federal RS RR come in 245 35 18

Pirelli P zero Corsa system also.

If on another set of rims look at Hankook Z214 or Hoosier R7.
Appreciate 0
Post Reply

Bookmarks

Tags
m135i, tire, track day

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 12:43 PM.




1addicts
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