Have mismatched tires on the 750 I just bought yesterday. The Pirellis on front and some Road Huggers on the back - back tires are more aggressive than front and not the same quality it seems. Im inclined to match the Pirelli's on the back - the spare is already mounted with it and the fronts are pretty new. The review on Discount Tire says they are quite good, low noise, high performance etc. At $78 per tire that seems fine - any further thoughts? Jonquil