So just a late night thought

I havent been able to get online and drift with people much lately because my internet is terrible, luckily ill have it fixed next week and up and running full speed. So ive just been doing a lot of drifting and tuning and building cars in my free time, well as im drifting around on different tracks I cant help but wonder, why exactly is the circle at road atlanta sticky anyway? It doesnt make any sense to me and i cant figure out any good justification for it. I know its just one track and all, but with the lack of tracks so far it kinda sucks that such an iconic track im virtually unable to drift because of this one little thing. I love forza and all and play it everyday without boredom. But I just wondering if anyone knew when or if they are ever going to change that? I know this has been asked a million times probably and Im not trying to start any kind of war here, just curious if anyone knows why it was even done to begin with.

Thanks guys!