It make any sense to just upgrade rotors?

cossie1600

Your car doesn't stop any quicker by changing just rotors unless your brakes are over its operating temperature. In the case of the Z and most relatively stock vehicle, you won't go over that by changing pads and fluids (not in the short time we can be out anyway). If you are so intend on running the stock pads, you MIGHT be able to get away by using tons of ducts and rotors. The question is, is it worth it?

Most amateur track sessions are less than 20-25 minutes long, you are more likely to hit traffic before you get 20 minutes of uninterrupted driving. I don't know what serious enthusiasts you are talking about, but most NASA TT drivers in the production classes run on relatively stock hardware with the exception of race pads (unless you have a crappy car). Heck, I have won a Redline Time Attack on smaller brakes than what I have in the 370. All you need is one hotlap, not twenty slow ones in most amateur track days. Obviously it isn't my money, but just a thought.

My 370z generated over 1.2G on the stock hardware with just pads. OEM pads with fancy rotors won't do much more than that. Heck even if it does, it wont be for long anyway.

my rotors were 600f after pulling off track, it got up to 1500, but it stabilize around 1300 to 1450