With my 3:90 gears, I shift at 2,000rpm to 2,400rpm. Not only does it drive fine, but the wear on enginge is much less than shifting at higher rpm. A car with 100k mileage that was shifted at 3,500rpm is not in the same condition as one that was shifted at 2,500rpm. A human heart gets stronger when excersized(higher pulse rate) an engine get weaker......sorry
