Actually cycleman, the S-11s give pretty good mileage. Average of about 15K on my GL12. Depending on how I ride.Buy the tire that suits your riding. If you are a high mile driver then you want a harder compound than the S11 but they will cost you.
It's not a good idea to leave a tire too long on a motorcycle. Rubber starts going hard & you will loose traction in the wet. I would expect that 5 yrs would be long enough as long as tread was still good.
16 yeas ain't nuttin. Hell, I have a bottle of scotch older than that!So, Cycleman, the 16 year old tires on my 750 is a no no? I only ride around town with it and have only put 6.5K on it in that time.
I don't ride in the rain unless I just get caught. I was feeling lucky getting that long. Now I realize that I was extremely lucky NOT having tire related trouble.
It seems that I have not quit learning..... Thanks.