I dont know if its true, but using derate, assument temperature and improved climb can lead to pretty high V-speeds (V1 past 150 and Vr well past 160) on long runways
The tyres, mate- wot about the bloody tyres....?
From what I have read in quite a few accident reports involving high speed rejected take offs, the cause has been tyre failures not necessarily engine failures. I wonder if the powers-that-be who decide on take off configurations involving de-rates and assumed temps etc that necessarily require higher V speeds, ever consider the statistics of engine failures near V1 versus tyre failures near V1.