18x8.5 +47 will fit up front but will be tucked. the inside of the spokes will be 13mm closer to the brake caliper and inner tire shoulder will be close to the strut and spring perch.
if you are going to use 225/45/18 then do all four front wheels 18x8 +34. if it were me, i'd increase the size to 235/45/18
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