IS300 brake kit comparison

If you look at the 350PHI kit, it outshines the rest from multiple points of view. The rear brakes can be upgraded to higher CoF (Coefficient of Friction) pads to mostly balance the brake bias back to stock. And if you manage to pull rotors and calipers from a junkyard for $75 each side, then you've got a killer setup for cheap! They're supposed to fit behind stock 17' wheels and some aftermarket 17', but they provide a paper cutout to "mock up" the fitment inside your rim before you purchase the brackets.

If price is no object, obviously the KSport would be the easy bolt-on solution for killer brakes, but you definitely need to upgrade the rim size.

This information draws from user experiences and fitment details for common performance upgrades.

It's important to verify fitment, especially wheel clearance, and consider brake bias implications when upgrading components.

Rear brakes are harder to pick a "great" kit, just please please be mindful of your bias while upgrading rear brakes, don't install brakes that drastically change the bias (even if they look amazing). Use my calculator on the other page, and plan out your brake upgrade.

It's important to keep in mind the purpose of your car when upgrading brakes. Some pads are noisy, others are dusty. If you have a show-car, you don't want to be cleaning brake dust off every week, and if it's just a street car and you want better brakes you don't want them to be loud. Factor that in. None of these brake pads are "better" than the others, each have pros and cons.