I have a set of TA3 on my 285kg Crosstourer........ I can tell you first hand.....they are not just for lighter bikes.The conti TA3 will oulast the PR5 and the R tec 01 by quite a margin, another 1500mls for me, and they have been the slowest to square off. They are fitted OE on the 1290 ADV I believe.
(also, I'm 130kg)
S20 5G sent this......