It's kinda hard to tell w/ these, but at what point is an ET Street too far gone for track duty? I don't really care about the street as that's not what I really use them for.

You can still see all the "tread" lines in mine, still can stick my fingernail in the middle groove. Mine probably have I dunno, about 50-60 passes on them? Maybe less, and my burnouts are usually 2nd gear burnouts.

BTW, my best 60' on them so far has been a 1.65'

 

I usually get between 200-250 passes out of a pair but they never see the street. When the grooves are gone so are the tires.

 

Thanks man, mine see limited street use. From home to the track, about 10 miles each way.

 

Even slicks have wear bars. The ET streets will have an area slightly higher inside a groove. When that wear bar reaches the top of the tread just like a normal street tire, it's worn out. Real slicks have holes in the tread. When the holes disappear, the tire is worn out.

How many runs on the tires really depends on how hard you are on the burnouts. Doing John Force types of burnouts can wear out a set of tires in less than 50 passes.

Age of the tires also determines if they're worn out. They have oils in the rubber that makes the rubber sticky when heated up in a burnout. When the tire gets old and dried out, it won't get as sticky even though there could be lots of tread left over.

That's usually why you see a lot of used slicks for sale at the track. The racer has found that the tires are not 60 footing the same any more and will buy a new set. For the average racer, these tires are still ok but for someone who demands consistancy, they're worn out.

 

IC, well mine are 100% consistent for now, my 60's the other night were usually within .010 of each other all night I guess they're in good shape.

I don't know if you could call my burnouts John Force style, but they're hefty, as our local track is a bit tough to hook at. I've tried other combos, and my burnouts now are the most effective I've found. Usually get up to speed in 1st to smoke 'em then finish out in 2nd gear.

 

another good indicator of when a slick is worn out is when it is hard to get a good smoke out of them in the burnout box.