Originally Posted by
Maxey
Keeping in mind this is just one man's opinion, I'd say if it came stock with disc brakes it's probably too new to be considered vintage. I hope this opinion doesn't cause any controversy, but I think it's a logical cut off for vintage status.
Mountain bike vintage is different from road bike vintage. Much shorter time line. A 2000 mountain bike with discs is
definitely vintage. That GT looks like it might be a 29er which
isn’t vintage.