Ge0

Hi Guys, I am from Singapore and am driving a 2006 Toyota Mark X which shares the same engine as the 2006 IS250 engine with a GS300 platform. I have replaced my front stock brakes to the IS350/ GS300 front Advics 4 pot BBK, and I am wondering if anyone here have replaced their rear stock brakes to the LS460 rear 2 pot brakes on their IS250/ 350, though the rotors of the ĹS460 are on PCD 5 X 120 instead of 5 X 114.3?

Appreciate if I can get any reply on the above.

afusco1222

I bet you will need a different hub to make it work. Kind of like the ISF brakes where the rotor won't fit because of it being a different bolt pattern. You could always find a used LS430 hub and see if it will bolt to the IS but I doubt it.

Ge0

Thanks for the reply, looks like I will have to go with the 2006 IS350/ GS300 rear brake conversion instead which is a direct bolt on.

afusco1222

Yeah and it won't sway your front to rear bias nearly as much as a dual piston caliper will. You might take 5% away from the front, but if anything, it will brake just like a stock IS350.