Tire cracks

Fellas,
Two years ago while build my car i got a new set of goodyear 34.5x17 16 slicks. Today i was inflating the tires and noticed small cracks in the sidewalls. The car is a hemi altered, Should i chuck these tires? Are they good enough to shake down the car? I wouldn't think after just two years they would become junk. Thanks for your input.
Thank You,

 

Just because you bought them two years ago doesn't mean they are two years old. Look for the date of manufacture on the tires. Even trailer tires should be replaced every four years. If you can't find the dates call Good Year and ask them how to determine the actual age.