How much tread on my tires can there be, before they need replacing? In other words... what is the recommended minimum tread depth on a GoodYear Eagle 245/45R17? By the way, I have about 35,000 highway miles on them already.
using a tread depth gauge, once you are below 3/32 tread you should look at replacing. driving till the metal shows is not safe, the tire can blow at any time.
use the old abe lincoln penny test. if you turn the penny upside down and insert it into the tread head first you shouldn't be able to see the top of abes head
or 3/32
use the old abe lincoln penny test. if you turn the penny upside down and insert it into the tread head first you shouldn't be able to see the top of abes head
or 3/32