I got 15500km out of my Michelin Pilot 3 tyres. Originals lasted 4500km. I check tyre pressure each fill and if I ride to work I take of smoothly (not too much throttle).
Assuming you mean Pilot Roads. I know these are subjective questions, one mans "aggressive riding" may not be anothers...
How aggressive of a rider are you?
Do you do much sport riding (high lean angle, performance oriented cornering)? If yes, just wondering on your take of the level of grip I could expect on multi-compound ST tires vs. sport tires?
Quite honestly I think I'd be good with PR4s as far as how I ride. But am concerned a little with when I'm riding aggressively. This involves breaking from 100 (~900-1000 foot straights) to around 30-40 mph 90+ degree turns and a 1st gear hairpin, and then accelerating out of those turns. Generally I achieve near full lean angle on my M5s. I've scraped my pegs a couple times hitting bumps mid turn. When I run my track, my wheels are covered in brake dust.
I'm also consider Q3s, although what I'm reading is even though they are MC for a lot of riders don't last any longer than single compound tires.