I barely noticed my front tires are going bald.
like a few millimeters left. Think thats killing the performance a little?

well once they are flat you have slicks...more rubber = more traction right

i honestly dont see how it could, if they were underinflated or something then yeah, but properly inflated tires are the same irregardless of how much tread they have left, unless you were referring to cornering performance or traction or something like that, but thats somewaht obvious

slicks eh,

blading tires(out of spec alignment) affects gas mileage and performance

and stopping power in the snow. I found out the hard way.

Take a penny and put it upside down in the treads. If you can see all of lincolns head then you need new tires.

There are actually small ribs that run the width of the tire between the tread blocks. Those ribs are at 2/32". 3/32" is illegal in Texas.

Funny thing about bald street tires, they actually are slick. Unlike drag slicks...

Yes get some new tires and an Alinment.

Due to heat and enviromental damage, tires get harder with age. A tire that is worn to the wear bars will have much less grip and be prone to hydroplaning.