advice on slick tyres ???

[boosted]

RACE SLICKS.

Hi after some advice on tyre choice for racing for 18 mins at castle combe in a westfield with 250 bhp live axle.

Need slicks as currently using 888 but never used before...need to be 15 " as got big brakes and 3 set of wheels.

poss looking at 195 50 15 fr and 205 50 15 rear in the slick equivalent sizes...

questions are

1. What makes
2. What compounds
3. How many laps will they last

where to get?

many thanks

Jon