19x8 - 215/30/R19 That is the absolute largest you would want to go. Look I'm not saying that putting 19's or even 20's on a corolla is impossible here, but your handling, ride, and even ability to accelerate more is diminished so much. Big wheels can look awesome (I personally am a fan of 16's 17's with around a one inch gap between the edge of the tyre to the guard (this can give the illusion that it's actually lowered more than 1 inch if you measure it this way. I think this just looks pure JDM track car pwnage yO). Big wheels kill handling dynamics. Period. Simple physics back this up, but like I said, personal preference. Some people make a big sacrifice on their cars just to get it to look good.