tire age ????

I want to put some bigger tires on my duster, there is a guy on CL here selling a set of 4 cooper futura gls that are the size I want. he says they have never been on a car, they are on chrome wheels and do look like he bought them yesterday. I want to buy them, but the date made code reads this: dot xbh 4103 go4r on 2 /other 2 say : dot xbh 3702 815r . I read the code as these were made in 2003 and 2002. I have heard tires this old , if I am right on the codes, can be bad. I do like no hiway driving , just cruising . am I crazy to buy these? thanks