Quote:
Originally Posted by Z K
The problem is specific to certain wheels and certain calipers. 380 rotor with the f80 caliper combo is designed to fit the f80 18” m3 wheels. Completely different caliper design, pad shapes and mounting points than these Brembos.
The Megane RS calipers these use are designed to work with the 355 rotor on that car and so they fit good on a 360 behind 18” wheels. It isn’t designed to work with a 380 rotor.
I’m not a fan of adapting calipers from other cars as it changes a lot of things such as brake bias, wheel clearance etc. A brake kit designed for a car is usually always better. I.e. even though they use the same calipers on every application, Stoptech uses different brake piston sizes on every application to match the stock system. But this budget option works good and has no drawbacks. I am surprised it works so well.
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Agreed. The F8x blue 4p caliper is on the smaller size, especially the area around the top of the pads and center of the caliper, so it clears a lot of different 18” wheels. Combining a larger six/four piston caliper with F8x 380 mm rotor can make using an 18” difficult or impossible.
I actually prefer a brake kit that moves the bias slightly rearward because combined with stiffer rear springs it improves overall braking with no impact on brake stability.