You seem to miss the point. ALL the numbers are minimums, V1 is the only exact number because it's known as a decision speed, clear cut, Vr & V2 do NOT have to be adhered to as long as they are not acted upon or flown LESS than calculated.
Are you talking about the FAR23 or 25 numbers, machtuk?
If you're talking about the FAR25 numbers, then I'm with JT and Aerocat - delaying Vr invalidates your BFL numbers.