Sidewalk cracks, ledges, drops, curb ramps,
and for when you 'drop off' the sidewalk edge to yield to a pedestrian,, you should yield btw,
Its a 'SideWALK' not a bike trail.. Unlike a DF bike We cannot hop things.
Anyway, My LWB Tour Easy had a 700x28c rear and I had to keep it just south of 100 psi. This caused me concern for my perfectly true factory made wheel.
Some of my Impacts felt like they could destroy my rear wheel, FYI:my comfort was fine in that oh so fat comfy cool back seat.
So I mounted a 'Hybrid' bike Tire, A Bontrager H5 Hard Case Lite 700x35c, It has a max psi of 60 or 4.1 bar $29.99 plus a fatter tube was needed.
A relatively cheap experiment and IMO it was a success.
The LBS guy said it would be a lot slower, my answer, "I will get stronger". On level ground below 10 mph I feel no difference at all,
as I pour on the power I need to spin a bit higher cadence, One gear lower is plenty, and when I hit a grade again a gear lower equals things out.
But The Bump factor,, wow, Night and Day. Noticeable at the first bump at the bottom of my drive way.
Those piles of sand at the Intersections where the side walk ramp ends, no longer are an Issue.
My best comparison would be, a 2 inch sidewalk section drop off, you know, near an Oak tree that's lifting the side walk.
a Two Inch drop feels like a ONE inch drop off with a less sudden thump and I can feel the tire rebounding nicely.
It's a keeper and as for a MPH less top speed, I don't spend time at top speed, I spend it at wide range of speeds constantly changing.
I did 20 miles this AM on the new tire, one of the 20 mile routes I've done many times, I don't feel any different, no sign of a harder workout.
But I'm not Into data, no computer on my bent, no Strada, no smart phone,
Only the wind In my face
A Penny for Your Thoughts ?