Honestly, I don't see a heck of a lot of benefit to putting 260 pounds over top of a 23c tire.
I'm about 90 pounds lighter and I don't realize any serious benefit from 23c tires either - I stick 'em on for racing, but other than that, I use 25c Michelin Pro Race 3's for training on my race rig and 28c's (Conti Grand Prix) on the Redline 'cross bike I knock around on. The weight difference between the 23c and 25c versions of the Pro Race 3 is only about 10-15 grams per tire. Not a big difference and the wider tires are a lot kinder over a lot of different road surfaces.