hey guys,

i am in Canada and i have a 2017 Lexus IS350 FSPORT AWD. I recently order EBC rotoors from TDOTPERFORMANCE and they didn't fit, so after back and forth with EBC and TDOT, they refunded me for the parts and i sent the rotos back.

I now placed new order with TDOT performance for the following parts:
StopTech 126.44184SL - Sport Brake Rotors - Slotted
StopTech 126.44185SR - Sport Brake Rotors - Slotted
StopTech 126.44189SL - Sport Brake Rotors - Slotted
StopTech 126.44189SR - Sport Brake Rotors - Slotted
They emailed me asking to confirm if the front rotors are 334mm and rears are 310mm. Without confirming they won't process the order. I called dealer, but thye won't give me the info..

I got those part number from SteopTech's website after selecting my exact vehicle.

Is there anyway someone can tell me what the rotor mm are for my car?

 

The stock rear discs are 12.2 inches, so yes, roughly 310 mm.
I got the same part numbers for the rear brakes when looking on buybrakes.com for a 2017 IS 350 AWD F Sport.

 

These are the part numbers for the front rotors on my '19 IS350 AWD F-Sport, which should be the same as yours.

43516-30041 left front rotor
43512-30351 right front rotor

https://www.fitinpart.sg/index.php?r...duct_id=601125

The above site seems to suggest that the front rotors are 334mm. If you look for the part number, you'll find it listed as equivalent for the part that they're selling.