A769

ok so im planning on going with some 18x7.5 +48 and 18x8.5 +50 wheels and was wondering what size tires i would be able to use without rubbing. i know for the front id be ok with 215 and for the back id be ok with 245-255 but i was wondering on the sidewall hieght. im dropped on espelirs so i was thinking maybe 215/35? and 245-255/30? i have no clue what i should go with for the hieght so if yall could help id really appreciate it. thanx alot