I have a 1995 Jeep Wrangler. It has a 4cyl. engine with 165,000 miles and a 5 speed transmission. Im installing a 6 in. lift on it and wanting to put 33x12.50-r15 mud terrains on it. With the 30's that it has on it now though it is pretty weak on power. Are the bigger tires gonna hurt my tranny...