We find different size of Bat logo, a left bat is more high than right...
The bat-emblems on the side of a red tyred Batmobile were noticeably thinner on the sides. If you own a red tyred that has the same emblems as any previous Batmobile or any that followed then its not genuine.
See below red tyre bat-emblems :
The 76-79 batmobile with the junior batmobile stickers on the doors, as you know the size of the stickers is a giveaway. We know Corgi when they ran out of materials used what was available, so that corgi did this.
Batmobile C267 stickers on the doors :
Junior batmobile stickers on the doors :