Hello and thanks for donating
I would definitely swap out the aftermarket wheels/tires to the OEM size first to see if this helps. That would be the easiest test. If it doesn't change anything than there may be a transmission issue. Speed sensor or shift solenoid is most common items to fail on the transmission, but it may be more severe than that. Best bet would be having diagnostic ran on the transmission.
Tuesday, August 24th, 2010 AT 3:02 PM