wheel pattern is 5x114.3, not 100.
8.5" is the width of the stock wheel you have on it already, don't need to get thinner.
and 265 series tires fit well on 9-9.5" but not an 8-8.5" wide wheel.
if it's your DD and nothing else, why do you really need that much rubber on it? it's not like a 235 is a civic tire or anything
run some 235/40/18's on an 18x8.5 +35 torques. it will look fine.
note: just my opinion