Originally Posted by
ksryder
50 psi is pretty high even with the extra weight, I'd start there and just adjust by 5 psi at a time until you figure out what works.
Think about people on touring and bike packing rigs, their bikes and gear are pretty heavy and their wheels and tires hold up fine.
Slightly pedantic note: the second number is the width in millimeters, i.e. 700c x 45mm. Not 45c.
Edited.
Yeah I just lowered my pressures to 40/45psi F/R to test it out and the rear tire felt pretty bouncy (and apparently I lost some pressure over a 2 mi. loop) so I went up to 45/50psi and for pavement-to-gravel I think this might be a bit better for balanced comfort and speed. I really wanted my 2 wheelsets to be differentiated, but I still wanted to squeeze out some comfort from my 45mm tires.