cross wrote: I think that we need to have same model tires front and back.
Sasha
I am not sure about this. Yes, it is a common perception that we need to have the same tire front and rear, but...
While I usually also select the same tire for both wheels, in some occasions, when the front tire lasts much longer than the rear, I have replaced the rear on a bike with a different tire than what still was on the front.
I also know quite a few people who ride extreme long distances (Key West to Prudhoe Bay, for example) and they replace tires while on the road and in most cases are not able to get the same model tire for the one wheel it is needed on.
I have not heard anybody reporting about a negative experience. We had a tire company rep giving us a lecture during one of our local BMW club meetings and when asked that question, he could not say anything that would prevent using a different model tire. Maybe someone with actual experience could weigh in. Of course, you should not pair radial with bias-ply tires...