Thinking 36" wheel openings would do the trick for those tires. Also watch your tire to tub height I am thinking you need 3" from top of tire to tub to be safe with tire growth and at least an 1" on sides for clearance but i'm just learning, mrcars I am sure is the expert in this. You don't want to have the rear up too high to clear tires or it takes away from the apperance of the car. Good Luck
