while the width doesn’t really matter too much, 9.5+ Kiwami are deep concave, below 9.5 is medium concave, 7.5 would be very low concave which would also play a part in clearing the face of the brakes.
i would say the issue is more the offset.
i had 9.5 +38 which cleared brembos with a little bit of extra clearance.
if you need to you can get a small spacer worse case scenario