I'd say offsets are high 40s even
as 18x9.5/11.5 will not sit on stock front/rears r32gtst guards like that with that size tyre and no negative camber if hewas running offsets lower than +30
either that or they're a 18x8.5/9.5 with high 20s low 30s offset
saying that the wheels look pretty good and cheap asking price, what are the tyre specs? 2??/35/R18