IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Changing brake pads for IS350F

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Old 03-27-15, 09:07 PM
  #31  
4WDrift
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Originally Posted by AdvanSLF
you're telling me something i already know, that is rotors are the same on both cars, with the exception of two different pads -- f sport and non-f sport.
the poster mentioned that the f sport pads will ruin the rotors (which i obviously already know by experience), create more brake dust and FADE FASTER. he also goes to mention that the non-f sport will be easier on the rotor, have less brake dust, but also FADE FASTER as well? that's the point i'm trying to clear up because how can something work less intensely (less dust, prolong rotor life) but yet also fade just as fast? maybe that was a typo from him, which i was trying to clear up?
Sorry guys for not seeing this sooner. Fade is a somewhat separate issue related to vehicle speed and strength of brake application. Any good pad and fresh fluid should rarely ever show fade on the street, but a prolonged mountain or track session is a different matter, where harder pads should be designed for the more severe usage.

http://en.wikipedia.org/wiki/Brake_fade
http://ebcbrakes.com/articles/what-is-brake-fade/
https://www.torquecars.com/articles/brake-fade.php

The F Sport pad MAY fade slower if it's better designed as noted in the links, but my guess according to Lexus is that it's just a grippier compound. And then F Sports tend to drive more aggressively so wear and fade may be faster... While I may drive aggressively sometimes, it's through turns and not during braking. I may go to non-F or aftermarket pads next time to reduce dust and rotor wear. Think of street pads as fine sandpaper, and race pads as coarse. More stopping bite but more rotor wear all the time also.

AdvanSLF, can't see your pics but a possibility is the caliper slide pins got sticky or froze up.
Old 03-27-15, 10:59 PM
  #32  
forum429
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I assume "fade faster" means brake fade would occurs easier due to the brake systems is unable to stand the high temperature.
High performance brake pads would stand higher temperature and most of the time the material is harder.
The F-Sport would stand higher temperature and it's a harder compound so would wear the rotor more.
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