Talk:PORSCHE 918 RSR CONCEPT/@comment-107.167.112.75-20180128030639/@comment-28169398-20180128051254

The base specs for the Spyder Concept are slightly better than those for the RSR Concept in acceleration and grip, the same for top speed, and worse for braking distance.

If those are the specs provided by Porsche, as these are concept cars (the Spyder in game is not the production version of the car), then what you are describing sounds about right.

As for the upgraded stats, those are fantasy stats that FM makes up. The Hennessey Venom GT didn't go much above 270mph, yet in the game, fully upgraded, it has a top speed of 290mph.