I bought my 2014 GTS from my local Porsche dealer just over a year ago with 10k miles on the clock. It now has 17k miles. I was not very happy with the grip and had a few scares in the wet (and dry), finally finding out that it was a problem with the tyres (Pirelli Pzero N0), which have a bad reputation among Porsche owners here in Spain. I recently upgraded to the N1 version and there has been a marked improvement in grip. However, I have now discovered that the standard PASM suspension is crap. It's OK in normal mode for cruising but in sport mode, the car appears to lean and lurch in corners with very little linearity in its reactions- very un Porsche like.( I own two other Porsches with passive suspension and they are very predictable and a delight to drive.) I mentioned my impressions to the dealer last week asking if they could firm up the suspension, using software or other means and the response was "not possible". I'm extremely disappointed as I really do not enjoy the car. Right now, the only thing which looks promising is the TPC DSC V2 PASM control module.