Mods that don't impact BMW Warranty?
So we have heard about all the stuff you can't put on your car without BMW voiding the warranty, CPO, extended warranty, etc.
So what can you put on your car that won't void the original 4yr/50K service warranty?
Also, I have a 2012 335is with 313's in 19". So does BMW have a performance brake upgrade for this care and will it void my warranty? I know they have Performance brakes for something close.
Thank you for any answers in advance.