although im not 100% sure, my car is not f -sport, as i dont see any brembo sign anywhere
it is 2011 ls460 awd, according to the guy above, only the awd model have the directional rotor

as in the shop. there is another old is350 beside me, so i take a look,. the rotor is also in the wrong direction according to the L OR R sign,
so i suspect all lexus rotor are stamped the L OR R on the wrong side if we believe in the air flow thing

the owner of the shop i go , is a technician at toyota/lexus for over 30 years, he cant explain why, he told me ,as to his knowledge , it is wrong, but that is the lexus way to install it as it clearly states which is L AND which is Right, but he cant provide the reason.

 

Datapoint: After installing my 2011 Sport Brembo rotors about 2 years ago CORRECTLY (but backwards from how they are labeled by Lexus), no warping so far.