700 x 23C Clincher Tires on 25mm HED Belgium+ Rims

[Jeff N.]

This combination has been highly recommended to me by several people in-the-know (plus what I've read), claiming less rolling resistance. Anyone else running this combination? What's the verdict?

[bitpuddle]

I'm running this combination on one bike. It works well, but if you are looking for some kind of magic, you'll be disappointed. 23c conti GP 4000s measure ~25 mm on these rims and you can drop the pressure quite a bit.

I prefer 25mm tires on these rims, if your frame has the clearance.

[weisan]

What puddle pal said.

[bpiecuch]

I ride 25mm wide Boyds, which are very similar to the Belgium+.

I started with 23mm Conti GP4000's at normal pressures (~100psi). They had a great race feel and tracked brilliantly in the corners. But, they rode like crap, and ride quality was no better (if not worse) than the Mavic wheels I replaced.

I brought the pressure down to 85-90psi, and the ride quality improved. But, I flatted 3 rides in a row, "Snake bites" from pot holes or what-not. So, while the ride improved a bit, it wasn't worth the flat hassle.

I've since changed to 25mm Conti GP4000's at lower pressure, 85-90psi. Ride is much improved, no more snake bites, and they still fit within my frame (barely...) I'm around 165-170lbs, and this combo has worked great for me over the past 2 years.