Originally Posted by
Koyote
And actual safety improvements seem to come only very occasionally… And they are difficult to prove empirically, at that. See for example the MIPS technology.
There is also Trek/Bontrager Wave Cell.
Plus helmet mounted lights.
I also find that the pads wear out every year or two, and are not necessarily easy to source. Perhaps by design. I avoid any pads with an open design.
Anyway, I'd be apt to upgrade due to wear, or new technology, but not on a set schedule.