Joined: Jul 2002
Posts: 40,863
Likes: 3,116
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Yes, it's perfectly okay. That's the maximum, not the optimal, pressure. And it's not necessarily the maximum, just the maximum their legal department is comfortable with.
(And are you sure that your pump only goes to 100, or that the gauge only goes to 100? )