What sort of tread size do these start to become poor/go off? Seen a set cheap that have 2.5 mm left and as I'm gonna nurbering again in october I was gonna throw them on a spare set off wheels and run them on track. Think there medium compound if that makes any difference?

 

I guess it partly depends how many heat cycles they have been subjected to?

 

dont drive out there on them, i only get about 2500 miles from the fronts and if they only 2.5mm on them now they will be shot before you get home.

 

I agree. they are about grip not lasting very long.

 

I won't be driving to/from the ring on them there gonna be on a spare set of wheels so are we saying they should be ok for the weekend?

 

Possibly be OK for 1/2 laps of hard driving.

 

Bare in mind if its a tourist day you are going to its a road, so the tyres must be road legal when you get to the end of your laps.

2.5mm would be fine for a couple of UK trackdays where it doesnt matter if they go under road legal, but I wouldnt want them at the ring.

 

Good point that chip totally slipped my mind thanks