IS F (2008-2014) Discussion topics related to the IS F model

Offset and Fitment?

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Old 08-10-09, 09:51 PM
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FBTO
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Default Offset and Fitment?

I am looking for 18 inch wheels for track purposes on my F. What sizes should I be looking for?

This is all I know so far:
18x9 Front
18x10 Rear

What is the fitment? 114.5?
What offsets?
And how do I know if it will clear the BBK?
Old 08-10-09, 10:07 PM
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lobuxracer
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BCD is 114.5mm. For the track you want to stick with the stock offsets to minimize stress on your wheel bearings. +45 front and +55 rear is stock. Clearing the brakes - you'll have to ask when you buy the wheels. Brembo has information on their website to help with this.
Old 08-10-09, 10:31 PM
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Joe Z
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Here is another helpful guide by Brembo..

OEM Lexus IS-F Front wheel cross section

This was developed during the Brembo GT big brake kit R&D for the IS-F,

Joe Z

Last edited by Joe Z; 08-10-09 at 10:35 PM.
Old 08-10-09, 11:04 PM
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chrisburke
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my 18s fit like a dream...
Old 08-11-09, 06:39 AM
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Originally Posted by chrisburke
my 18s fit like a dream...
Which 18" are you running? Do you have pics?
Old 08-11-09, 06:41 AM
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Thanks!
Originally Posted by lobuxracer
BCD is 114.5mm. For the track you want to stick with the stock offsets to minimize stress on your wheel bearings. +45 front and +55 rear is stock. Clearing the brakes - you'll have to ask when you buy the wheels. Brembo has information on their website to help with this.
Thanks!
Originally Posted by Joe Z
Here is another helpful guide by Brembo..

OEM Lexus IS-F Front wheel cross section

This was developed during the Brembo GT big brake kit R&D for the IS-F,

Joe Z
Old 08-11-09, 07:05 AM
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chrisburke
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pm me.. for pics..
Old 08-12-09, 12:06 PM
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Could I run something like this?

http://www.frsport.com/Volk_Racing_G...el_p_8202.html

All four wheels the same size?
Old 08-12-09, 12:13 PM
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And what is the widest tire I could fit on them?
Old 08-12-09, 12:14 PM
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Could I still run the stock tires on these wheels? 225 front and 255 back?
Old 08-12-09, 12:22 PM
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This is a cool site, if only I knew how to read it...

http://www.rims-n-tires.com/rt_specs.jsp
Old 08-12-09, 03:31 PM
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Originally Posted by FBTO
This is a cool site, if only I knew how to read it...

http://www.rims-n-tires.com/rt_specs.jsp
Thanks for the Link - Fun to play around with it

Lou
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