See, I think upgrading the front brakes is better because rear brakes if they are too big can lock up.

So do you fronts first. On a race car you need to do all four at the same time though.

1993 300E brakes are 4 piston calipers which are nice, they take the same pads as 300CE brakes, 400E, 500E, 600SL brakes, so the sweep area is the same on all four, just the rotors get bigger, when the rotors get bigger it reduces fade, not so much braking power.

Throw in a good set of pads like R4-S porterfields and you would be very suprised.

300CE
300E late model E320
400E E420
500E / 320SL / 500SL R129
E500 / 600SL

Are all great upgrades? GSXR seems to think that 400E brakes are the most bang for the buck, I think I would agree. For 190s, and 300Es and Ds.

Good luck with your upgrade. For the amount of time and money I have spend screwing around with brakes, I could have bought the Brembo Gt kit, which I still might do. Guido has the Stoptech kit for his 500E, and from what I hear he really likes it. They, at stoptech, use some kind of ferrari caliper and adapt it.

Anyway, if you want to buy some 911 turbo 2002 brakes if you want to screw with them let me know. I have those, Im not going to use them so I might as well sell them.

My friend owns a junk yard, he has a set of E420 rear brakes, a set of E320 brakes front, and I think thats about it right now for w124s.

Regards,

__________________
Current Stable:
1994 S500 v140, 210k miles, white with grey.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now)
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020)
1992 500E 156k mi sold
etc.