A good set of motorcycle tires can cost a lot of coin. Quality is expensive and this is no different with the tires you buy for you motorcycle, be it a street bike or a motocross motorcycle.You can easily spend up to $200-$400 or more for a couple good tires so it is a help to your wallet if you take care of the tires. When compared to the cost of some used bikes, that can be a lot. Tires are critically important to a motorcyclist - how many motorcycle riders have you heard of that have had a "blowout?" this alone is a darn good reason why you need to keep an eye on your bikes rubber. 

So what should you do to protect yourself against getting a blowout?
Here's what to look for in your tires:
Tread- 1 mm or less (if you can see the top of Abe Lincoln's head if you stick a penny in the tire tread) and the tire really should be replaced.1-2mm deep usually means they have about an average of a season's worth on 'em and it also depends how much you ride and how much horsepower the motorcycle has. More than 2 mm, and you're pretty much ok for a few hundred more miles. If you only put a few hundred miles a year on your motorcycle then you will need to keep an eye out for the dreaded Dry Rotting- or "cracking."This results in old age for the tires and/or the bike has not been in covered storage. Real "light" cracking may be ok, but basically if there is excessive dry rotting, you should get new tires because a motorcycle tire with dry rot cracks is very unsafe. These aged tires will blow when you least expect it and the best you can hope for is to walk away from the resulting accident with only a few bruises and a pound or so less flesh. Do I need to mention the worst case scenario? Thought not.