Looking to put some new tires on the wife's 2001 Expy xlt. I put 18" Lightning wheels on it. I am looking for some suggestions on tire size's. Currently it has the tires that came on the Lightning wheels, but they are too low/skinny. They are 255/55/18. Opinions???

What size are the stock tires on the newer body style 18's?

She drives mostly city/some highway, never off road, dont pull a trailer with it. Open to opinions on the tire make/model as well.

Thanks in advance,