Best tire set up for 19's staggered
 

Whats the best tire set up for handling and problem free, for staggered 19's. Right now I have 20's and downgrading to 19's, because I feel my car is too slow. I have 245 35 20 in front and 275 35 20 in back. I love it and would like to have the same width, is it possible. tried to research but didn't find any results. Thanks