if it doesnt rub you have the wrong wheels.
i have the press in ball joint type too, when i measure them up to standard by eye looked about 20mm and i just assumed you had the bolt in ball joint type. In that case good purchase, i think 30mm is not excessive by any means, once you have some camber tops and have mucked around with your guard rim combo you can dial out a smidge of camber but still keep awesome track. Which I'm sure your well aware of.