Futch:
RC:

10 laps is a bit extreme for amateur fun driving, don't you think ? 

 I don't think so. It's the standard session duration for a sportscar on a trackday I would say.

One lap to warm up the tyres, a good 8 laps of fun and one lap to cool the brakes.

On a F1 track like Monza, that's about 20 minutes.

I remember my first trackdays with my 2003 Boxster S, I would drive for 20 to 30 minutes.

That's why those laptimes have to be taken with a pinch of salt from the media, yes it's really cool that a Panamera Turbo S can lap quicker than a GT3, but for those who enjoy trackdays, the fun is in driving several laps.

A good trackday with a GT3 would be 4 sessions of 20 to 30 mins I'd say.

 

Agreed.  Our local trackdays usually consist of at least three sessions of 20 minutes each.  On a circuit where most 911s should be lapping in about 1:30, that easily translates into 10+ laps per session.  This is not racing, just fun trackdays for owners of Porsches (and, sometimes, other sports cars).  Any sports car worth the name should be able to handle that without shredding its tyres and frying its brakes.  Smiley