hey mate you should be good with barrel diameter so long as you have the width. Koya recommended that I get 18x8.5 +32 +35 for the front, so 9" +30 should be plenty
I recently bought a set of CTSV front calipers for my VE commodore ute. Right away, I realised that my HSVi Veloce rims would not fit the brakes (pictured below)
So naturally I went ahead and did my research into what rims will fit these calipers.
My other issue was that I was interested in...