Getting ready to buy a ps4, t300 and pcars. My background is only the GT series. I really like to drive stock cars since that way the different driving experience between cars is greater; using some of the tunes by the tuning gurus makes most of the cars to drive very similar. Faster but similar driving. I'm no tuner at all. I really don't find a lot of pleasure by tuning a car for hours. The big question is: is tuning a must for an average driver to get some fun a make progress in pcars?