Biggest tires w/o major frame mods?

[chris mc bride]

Since building Panel to be driven abd driven hard(only way I do things). I want to make it handle realy well but up to point where only way better would be major from mods.

I am thinking I can run 10" tires all around to give it a road race look and stance. Not sure how well 10s work on front.

I am looking at some aluminum rally wheels right now but still in air and ways off before needing them. Can change at any moment.Oh yea wanting 18" diameter to get good size tire w/o fat sidewalls. Not doing the huge wheel rubber band tire thing,just not for me.

Suggestions and inpout welcomed.