Project 2.Slow Mazda3

[Beej]

they don't think about some circumstances as in my car's concern. I know Sam's car for example doesn't need to cut anything to be able to fit extra camber like mine.

I'm sure they thought exactly about circumstances like yours. If it's any consolation, have a look at the 2014 National STF results: a Mazda 3 is sitting in 3rd place and there are a total of 7 in the top 24.

What do you interpret as cutting? I see cutting as in modifying to cut the fenders short or higher. I see what I did as shaving and will give the same clearance as rolling probably actually less.... Just being cheaper.

As for the rule:

Street Touring, Rule 14.2.E
Fenders may not be cut or flared but the inside lip may be rolled to gain additional tire clearance. (The outer fender contour may not be changed.) Plastic and rubber wheel well splash shields may be mod- ified for tire clearance and to accommodate a rolled inside fender lip. The modifications may serve no other purpose (e.g., air intake, brake ducts, etc). No other changes to the standard fenders or wheel wells are permitted.

I'd probably say that removing any metal would be called cutting, but I ain't the guy to ask.