Tire size

[Redneck Teepee]

Pull your tear out to level ground and place a jack underneath the axle as close to the tire tire as possible, jack the tire off the ground and have a buddy or wife, some body sit in the door way of the jacked up side to simulate a loaded tear, then look to see if the tire contacts the frame or how much space you have to spare.
This will simulate going up a curb or approach and if you are not off-roading should be good to go if all is clear.

Just my 2 cents worth.......