Donked on the turn....

[soded]

How tight are we talking about? enough that he'll only call 4.5 BB with 99 and up? If he's as tight as you say... the only other viable hands would be T9s, TT that hit the board that you would need to worry about. Do you have reads on his aggression factor post flop? folding to 80% c-bet would suggest weak-tight and the sign of aggression can mean to fold, but be sure you have a good read. The range of hands that beat you here is very small.