The Definitive Z34 Brake Resource

SE

Oh ok. I still wouldn't upgrade with those items unless I knew that was the root cause of braking issues. Since it's a documented overheating issue, the cheapest and most effective route would be to invest in brake ducting. Most casual track drivers would barely feel the effects. If you wanted to be on the safe side though, pads/rotors/fluid/lines/ducting should be fine.

I've seen more documented issues with the ABS system on dedicated track cars then anything else.