2015 Model year, what was the standard/factory suspension (vs the standard S form). Lowered (shorter springs) ride height by ??mm, and with PASM?

Was Sport Suspension then an option for the GTS. And if so how does one tell if teh car has the SS option (if the window sticker or sales certs are not available?

Clearly I can ask a dealer to search by VIN but if there is a quick way to tell that would be nice to know.

 

The 981 GTS models came standard with 10mm lower PASM. No cost option was 20mm lower X73 Sports Suspension.

The easiest way to tell an X73 GTS from a PASM-equipped GTS (other than one being obviously lower than the other) is to look on the center console by the shifter. GTS cars with PASM have an extra button on the left, with a shock absorber icon (to change PASM modes).