Maybe you burned your clutch. That occurs when you hold on the clutch pedal too long and it just slips when you slam on the throttle. The clutch just overheats, burns and the smell comes from the front and fills the interior. The smell doesn't go away for a good couple of days.
If this is the problem, you should brush up on shifting techniques. I doubt it's the brakes. You should have to overheat them a great deal to make them smell. If it's not your tires, it's your clutch for sure.
'02 C32 AMG @ 18psi - Eurocharged custom ECU/TCU, ASP 178mm crank pulley + NW PSK, CM30 i/c pump, NW i/c iso kit, EC i/c, Magnecore wires, NW CAI, SL55 Y pipe, NW ported intake manifolds + gaskets/spacers, NW inconel exhaust manifolds, NW catch can, dual exhaust, H&R sways, H&R coilovers, H&R spacers, Quaife ATB LSD, goodridge lines, Stoptech pads, AMG 18" rims, Zeitronix datalogger.