Will having two different TPI tires make a difference? For instance, rear tire is 120 TPI and front tire is 60 TPI. I just bought a Vittoria Pro Slick 23mm - 120 TPI to replace my stock tire, Hutchinson Equinox II 23mm - 60 TPI. I have the Vittoria on the rear and the stock tire on the front. I haven't had a chance to ride the bike yet..

Is it better to have both tire TPI the same or should I just stick to this combo until my front tire wears out? Will there be a noticeable difference between a 60 and 120 TPI vs both tires being 120 TPI?

Thanks!