I still have the stock 15" rims and right now they have p215/65/15 tires. I want something wider but not too wide though like maybe a 235? What is the biggest tire i can get on these without having to get new rims, cause i like the rally style wheels i have.

I am running 245/60's on the back. On the stock 15 by 7 rims. That's as wide as I personally would go, but I'm sure a 255 series would fit on there.

255/60 is pretty popular.

275/60 is done in the rear for superior traction. Not great for autocross obviously.

235/60 is a very good choice upfront (or all around).

i think im going to go with 235/60 all around.