I have heard that lowering your car causes camber? can someone clear this up if it does or doesn't and the best way to do it and the cheapest.

thanks in advance

 

Lowering your car causes negative camber. The bad news is it's not really adjustable on a stock 3. The good news is there are options to straighten everything out. The other bad news is it's gonna cost you a few bucks...like 500+

Rear (you need 2)
SPC Camber Arm: MS3, Mazda 3

Front:
https://corksport.com/corksport-mazd...er-plates.html

If you plan on lowering your 3, I'd look into a set of good coilovers. It'll most likely be cheaper in the long run.