Most short haul 2 engine jets that I've flown get to Vr at about the 30 secs mark . So TLAR [ that looks about right ] . Seem to remember the rotation rate that I was taught was about 2 1/2 degrees per sec [ 6 secs to 15 degrees pitch ] .Therefore lift off is a few seconds later that rotate .
Longhaul , 2 or 4 eng ; Vr at about 45-50 secs . Very longhaul or hot 'n high , Vr at about 60 secs or more !