2003 tallest tire size?

I just bought a 2003 4runner that needs new tires. I want to go with a taller size but it doesn't look like there is too much room to work with in the wheel wells. What is the tallest tire size you can get away with on a 2003 4runner with no rubbing, even at full flex? I have the stock suspension and 17 inch stock alloy wheels on a SR5. Thanks!

I have a 2003 limited with the 17" wheel.  I put the 265/70/R17.  That is as large as the sales rep told me I could go without lifting the vehicle.  That is the next project I guess.