What is the difference between "Perfomance" tires and other tires?

I just bought some Performance GT tires by Douglas. What's the difference in performance and other tires. Are Douglas tires crappy?|||performance tires have a lower tread wear rating but better traction and are rated for higher speeds as where "regular" tires are not.|||no douglas r some good tires prefomance tires handle the road better then stock|||Performance tires use a softer rubber compound and a more aggressive tread. This is what gives you more traction, but is also why you have to replace them more often.|||sometimes size, often treadwear rating. the lwer the number(on the sidewall) the softer the rubber. good grip, but will wear out soon.|||performance tyres are a lower profile,%26amp; usually a wider tyre than normal specs. the reason being that there is less sideways movement when cornering,giving better grip at faster speeds.