What size tires should i put on 20x8.5 rims on 07 Chrysler 300?

[Leslie]

Heres the deal i have an 07 chrysler 300 and i currently have 22's on it with rear n front tires at 255/30 22 and seriously within a 3-6 mnth time frame ive replaced 5! completely flat tires so now ive come to the point where i want to tatke those bad boys off and go down to 20 inch rims. I just ordered the rims i have some 20x8.5 machinedm rims. Didnt want to do chrome anymore. But to get to the question i really am going for the more stock look. Ive seen some 300's with stock 20s and machined rims and it looked amazing so thats the look im going for! What size tires should i get to accomplish that look? I want tires that fill up the gap pretty well and doesnt really have that "low profile" thing going on im not tryna be buying new tires all the time so anyone someobeody please help me lol