I have 4 year old Metzlers with lots of tread and they "appear" to be in good condition. The person that I bought the bike off didn't use it very much. I have heard from friends that tires lose their "consistency" after that long and upon touch they do feel greasier than a new broken in tire. If I can avoid buying new tires I would prefer to save the money ... but I don't want to crash because I was too cheap to replace the most important part of the bike.
Should I replace them or can they last the season? If so ... what tires are the best sticky summer tires which will last at least a year or so?
Thanks in advance for any help