I've had my '07 since 6-25-07 and have about 2700 miles on it. Getting an average of 53.5mpg. When I'm in reverse and turning I notice the tires are scruffing on the pavement, similar to the 4X4 trucks I've had. Is this normal? I've had other FWD cars and haven't noticed this. Thanks! Really enjoy this PriusChat group -- spend way too many hours in front of the computer!