haven't done it, and@jcl Thanks for the input, really appreciated, I downgraded my 19”staggered (front were 9j rear 10j) to 18” 8.5 J all round (LA star spoke 74 style) in the hope I would have a slightly softer ride due to higher sidewalls and be able to rotate tires all way round now, and threw on Avon ranger sports tires all round bit noisy but ok tires, alloys where used looked fine but the previous owner in his wisdom coated the inside with primer paint! This paint flaked so my tires were not sitting 100% flush with alloy so I had big air leaks by the time I got home…anyway garage cleared flaked off paint added a coating of bead sealer to lip of rim and fitted my tire and all seems ok now, was worried alloys may have been crooked etc but doesn’t seem the case, paid about 73 dollars per alloy…..BUT spending all day on my wheels as opposed to my wife didn’t go down too well….not one little but!