I have 285/30/20 in my rear on 20x10 +42 with no rub at all.

Im not riding that low though, only about 1.1 or 1.2 inch drop on a set of Tien H Tech coils.


........Daily driver

and those 285's above look stretched because they are, right on the tire (falken 452) it says "do not mount on 10.5 inch wheels"

 

to the top

 

Lexus gs fenders are a bi+%# to roll I had to beat mine with a sledge hammer

 

I have Maserati bird cage 20s 20x8 and 20x10.5 they're 5x114.3 but I had to get them drilled so I could use lug nut and not lug bolt (like BMW style). I wanted to go stretched so I did 225 30 20 in front (way to small of a tire ) and 255 35 20 in the rear car is dropped 1.5.front and 1.3 rear (tein). I'm going to change my tires to 235 35 20 in front and 285 30 20 in the rear . I previously had 285 on the rear (make sure you widen your fenders ,using the roller tool won't don't **** to gs fenders (rear) I had to beat mine . Maserati 20s

These came off a Maserati custom 3 piece wheels 285 35 20 in the rear n yes they did rub a little bit with fenders done

10.5 in the rear 275 30 19s these are tenzo R