Anyone running Michelin pilot super sports

No because they don't come in 17".

I see a few of the meg guys running them on FB though
 
Personally I would recommend Goodyear Eagle F1 Asymmetric 2s for general/sporty road driving (imo relatively cheap) or Yokohama AD08Rs for fast road/track use (more expensive and wear quicker)
 
Yeah got Michelin PSS on my 18" OZ Ultraleggera, mega in dry/wet, also gonna put a second set of AD08Rs on my OEM 17" Speedlines. Cornering Speed and breaking Performance is simply perfect on the PSS, cant fault them. PS3s are ****, sidewall not stiff enough and poor dry grip. Two of my mates also run the PSS on their M2RS/M3RS and absolutely recommend them.

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It seems like I'll be going back to CSC3 then...

Have GY E F1 A2 now and they're shyte...sidewalls are so soft that the tyre goes underneath the rim when cornering hard and the feedback is awful.
 
I run them on the M3. Fantastic in the dry, average in the wet. On my other pet of wheels I use vred ultrac vorti and I reckon they're as good.
I run the vreds on the 197 and have no complaints with them at all.