6000 miles My first set are almost on the wear markers after less than 300 miles 😬....ok, so that is 2 x trackdays, 1 x 20 minute qualifying and 2 x 20 minute races 😬
As the guys here have said 18 psi all around will be fine and give you 20 - 12psi hot, depending on how hard you work them. If you are getting 6000 miles from a set I think you are doing really, really well