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Join Date: Apr 2008
Location: S.E. Michigan
Riding on aged tires can be dicey. I've heard a variety of the "rule's of thumb" from 4 years to 7. Or if you don't know the age, then change them.
After time, alot of time, heating and cooling, baking in the sun, etc the original chemicals and properties and changed and/or faded away. Some pliability, for grip and lean angles, not to mention a very small contact patch and only two of them, common sense should be enough to let $200 out for new tires, though some folks need to dump it first....
I don't go past 4 years on my tires, even if they "look" great. And I've ridden on bike with older tires that had a habit of slipping and sliding around corners on dry pavement. The feel and confidence on tires that are good is worth the time and money.
And bias ply tires today are better than the bias ply tires some of us remember from several/many years ago. Sure a radial tire is better, but if you're in a pinch and light on money, slap on a new set of bias-plys and keep on riding. A new set of bias-ply's will be better by far than a set of tires 5 years old or more.....
(IMO of course)
Last edited by 750Doug; 02-13-2009 at 03:16 PM.