Looking for a bigger tire

[Hunter66]

99 in need of a few inches more ground clearance for driving on the beach.When I air down to 20 lbs she sits mighty low.
What is the biggest tire the factory 15 inch rim can handle??

 

[hunterdan]

The Wheel and Tire forum has your answers, but a 31-10.50-15 will fit fine with little to no rubbing.

Dan