OptionZero

maybe you should read up on how these settings work?

Negative camber generally improves grip while turning

Closer to zero camber is better for straight line acceleration.

No one can give you an exactly perfect setting because you're not driving on some track where there are timed laps to dial it in, you're driving on some randomass road on a personal car

I also find it hilarious that you're trying to get some magic camber setting to help you go faster but also balk at the idea of potential tire wear. Guess what? Hard driving + lots of grip = worn tires. Its sort of just . . . physics? tires are there to grip, the more they grip, the faster they wear. Thats common sense, its why your the prius comes with shitty tires that never wear and last forever but don't do crap for handling, but some spec'd out hardcore racer will have to swap tires frequently

if you want more grip, get better tires
if you think you're losing rear traction in turns, more camber, if you want straight line acceleration, less camber

the factory settings, at least on a nismo, has a bit under 2 deg camber rear and 1 deg front, its not much, but i'm fairly certain they have more camber in rear as a conservative, safety oriented approach.

The track guys can chime in, but i believe when you're trying to go fast you will want more camber in front than rear; the front tires are doing the turning/steering and you want the front tires to have as much grip as possible while turning to dial out understeer. Pretty much everyone tracking their Z is trying to reduce this car's understeer (bigass rear bar, more tire up front, etc)

for you, not tracking the car but with massively increased power . . . again. Get better tires. PS2 Cups or somethin.