the forged wheels are beadlock --capable--. the rings on there now are beauty rings, you need to purchase actual bead lock rings and have them and the tires mounted to facilitate off road tire pressure that low. FWIW, I’ve run 20-22 with no problem in sand. Others can comment on how far you can go on the stock rims. There are some aftermarket rims that have a better bead grip, and don’t require rings. not as effective as bead locks, but better than normal.