Rejected T/O,S in the low and high speed regime are specifically spelt out in my companys FOM.....low speed below 80kts,...high speed above 80kts.....VIB above 5.0 is certainly cause for concern on T/O ,s v,s VIB on engine start for which we have procedures.....
I posed this question to our Chief Check Airmen..... his answer ,the same as mine....totally justified in a rejected T/O......Pull of the Rwy,call MTX,have then download the data......sounds easy I reckon
Baret1.....VIB parameters are in "our" MEL