I'm just wondering whether the DeLorean time machine has any restrictions on how far into the future or how far into the past it can travel.
Inspired when I was considering an earlier question of mine it struck me that the earliest we actually see the DeLorean travel to 1st of January 1885 - the time circuits may have defaulted to that date because that was the earliest date (i.e. 100 years from when it was made and 70 years from when it was in 1955) that the DeLorean could travel to. Yet, we see in the beginning of Back to the Future that Doc suggests the time machine could travel to witness the birth of Christ (the date he uses is 25 December 0000).
So, my question: is there any evidence to suggest there are any restrictions on how far into the future or past the DeLorean can travel to?