Originally Posted by
WhyFi
This is where I'm at, too. About the same size, about the same ****ty roads.
For me, it's not so much tire size that I'm after as it's a tire pressure target and the tire width is what gets me there. I can run my 30mm tires at 65-70psi - soaks up road imperfections and I feel *so* much better at the end of long rides.
At the same time, if I were light enough to run 25s in that region, without a greatly increased risk of bottoming out/pinch-flatting, I'd totally do it and not think twice. Along those lines, there's a lighter guy in my club (prolly sub-150) that's running 32s at 50psi or under. I think it's kinda silly. I can't imagine that much of a comfort gain at that weight and I don't think that I'd want the extra mass (rotating, even!) and frontal area for those (questionable) comfort gains.
I love riding my gravel bike on the 40mm tubeless gravel tires, there's more rolling resistance of course, but at 40/50psi, they just soak up every bump and crack. The 28mm GP5Ks strike a good balance for when I want to go faster. I'm betting the 32mm GP5Ks would prob still be just as fast and even more comfortable. I might try those on the road wheelset I have for the gravel bike, not sure my Fuji could clear those, I'll see how much room is left when I get the 28's on there.