I recently purchased a set of Explorer 17" x 7.5" wheels and tires from a new Explorer. The tires are BFG 245/65 r17 Rugged Trail TA's 105 H. I contacted BFG and their customer support said to run 29psi in the front and 34psi in the rears. The ride is crappy at this setting. Does anyone have any ideas as to what the psi should be?????