I currently ride a Trek FX 7.2 with 700x35 tires on a supported dumb trainer (Travel Trac Comp Fluid). I’m definitely going faster that I would be for the same effort level on the road, and it feels a little unfair (though I still get passed by LOADS of people… I’m not winning any races here, more like going 19 mph when I might go 14 on the road), but also make it less of a great training tool.
I’d been thinking of going to 700x28s, but even that won’t be the 700x23 that it’s calibrated for.
My question is, is there some way to adjust for a fatter tire? More resistance on the tire? Less? Or am I just stuck?