I've also got gold on all the license tests, using a DS3. I'd say the most difficult was the double hairpin on Indianapolis, the sports (or was it comfort? Can't remember) tires had no grip whatsoever.
The X1 challenges are way too hard with a DS3 (although, I could put more time into them to improve, but I doubt I'd ever reach gold), and I'm also finding the Nurburgring in the wet extremely tough.








