2001 bmw 740 I sport read full description

A very clean non smoker car.runs great with navigation and back up camera custom leather interior power moon roof.cold ac and great heat.i am driving this car every day.when I was backing out of my garage I felt a shutter in the transmission.this only happens when excelerating hard when backing up.if I back up slow there is no issue.there are no other issues with this car.except the very small dent in the driver front fender,very minor.all 4 tires have great tread on them.tires 235/50/zr18 I have a clear title .please call steven@201 874 2367 Thank you!!!!