need tire size advice for new wheels

Just ordered Apex EC-7's sizes 18x10 rear and 18x8.5 front. Just looking for some insight on tire sizes for front and rear that has a good flush fit on the rim with a decent amount of sidewall, like the M3/M4 have that come stock. I appreciate any help, thanks!





2008 E92 jet black/jb4/catless dp's/BB catback Exhaust/AFE DCI/ram air scoops/black out grills and reflectors/