If you are going to race on such terrible roads, then get the widest tires you can fit on your bike from here and beat everyone in the race: https://www.compasscycle.com/product...ponents/tires/

I am running 1.25" (or 32mm) wide tires now and I would NEVER go any lower. I plan to upgrade to 2.0" wide tires in the future. Wider tires ARE faster. You guys talking about jumping from 25mm to 28mm have got to be joking. That is a minuscule jump and will hardly make a difference.