To all the people beating Lewis' time quite easily, you have to remember that Lewis spends 99.99% of this time racing real cars, so his body is adapted to the limits of real world physics more than a game's physics. So even though GTS physics allows faster times, my feeling is Lewis wouldn't push the AMG beyond what his internal "sensor" deems possible in real life, hence the easily beatable lap times. If you keep this in mind, and try to drive conservatively and not abuse track limits or deficiencies in GTS' physics, then I imagine it would be quite challenging to beat the time. The physics updates post release does muck up direct comparisons though. Judging from license test times alone, laptimes are now easily 1-2 seconds faster than vanilla game.
The funniest moment I find is when Lewis asked Kaz what tyres he's on, and Kaz can only sheepishly said "Um, there's no particular brand"
It's about time you simulate proper real world tyres instead of PD universe control tyres Kaz