Hi guys - I'm after some brake know-how, please.
I used to have a normal E46 M3. The best thing I did to that car was to put a StopTech BBK on the front. It's a 4-piston caliper and 355mm disc set up.
I've been emailing StopTech in the 'states, who have said that I should fit a different StopTech kit to retain the correct front/rear balance. They say that, as the rear caliper pistons on the CSL are larger (46 vs 42mm?), I need calipers with larger pistons on the front. This all makes eminent sense so far.
My quandry comes when I look at other manufacturers' kits (including AP, as far as I can make out). They seem to offer only one front BBK, for both the M3 and the CSL. So I am left wondering how much difference there is between the 2 StopTech kits and whether I really need to buy different front brakes.
I am happy with the other options (pads/fluid/brake less etc), but I tried all those on the M3 and I am sure that I will eventually go for a BBK on the CSL.
Thanks for taking the time to read all this rubbish. Grateful for any ideas - the wife will have a hissy seizure if I tell her I want new brakes.
