I need to replace my rear tire because of a screw puncture. They no longer make the Pirelli Strada (sport touring), it's replaced by the new Angel ST (sport touring). I have a lot of tread and life left in these somewhat new tires, so getting a new front seems like such a waste as well. I normally go 2 rears to 1 front, unless switching brands but this isn't much of a switch really, so what do you all think? Do you always get tires in pairs or do you mix and match? I know some are made to work in conjunction with each other but these are very similar in tread as well. I loved the Strada's by the way, great tire, hope the new Angel ST's are as good.