Recently I was driving my 1997 LC and started feeling a slight vibration around 35mph, like driving over ruts on the side of the road. After taking it to a few place to diagnose and fix the problem I was informed that the gears in the transmission we fused together most likely due to driving with larger tires (33's). This came from someone at Toyota corporate who is apprently knowledgeable on the older Cruisers. To be honest this is the first that I have heard of such a thing and I was wondering if there was anyone out there that may have some additional insight?