I find this interesting.
I presently ride on Conti GP 4 Season 23mm tires.
I plan to try the new GP 4000's, as they weigh less and allegedly have less rolling resistance.
The GP 4000's come in 23mm and 25mm.
I would normally stick with 23mm, but I notice the 25mm tires come with a reflective sidewall and, since I ride quite a bit at night, the reflective sidewall sounds like a good idea.
Conti lists the max pressure for both width tires as 120lbs, but recommends 95lbs for the 25mm tires and 110lbs for the 23mm tires.
Sheldon says the wider of two tires, at the same pressure, has less rolling resistance.
This raises a whole slew of questions.
Has anyone here ridden the same family of tires in both 23mm and 25mm, and what if any differences did they experience?