I hit 80 heading to Charlotte on I-77 and my Exedra Max was dealing with it but the rain was moderate.
Thought I was doing 60 as the Triumph gauges print is so small-It was unintentional.
Can't speak for heavy rain as I usually pull over as the siping is not enough to give me the confidence to take that risk.
I am not sure any MT is really up to heavy rain at speed......
