tire width & rolling resistance

[Catrin]

In my experience, changes to tire width don't have a whole lot of effect on speed and rolling resistance. Wider tires are definitely more comfortable though, due to the increase in volume.

If you like the tires that you have, and they're wearing well, I wouldn't sweat it. JMHO though....

Becky - thanks - that is exactly what I needed to know - thanks!

Thorn, I think I saw that thread on Bike forums - the LD/Rando forum is really the only one I visit there. Will check it out for my edification - thanks!

[OakLeaf]

1/4" is a LARGE change. Think about it, it's over 6 mm.

You may have a small decrease in rolling resistance due to a smaller contact patch, but you will have a LARGE decrease in weight.

Weight of the tires, tubes and rims is the most significant weight on your bike, because it's rotating weight with a very large diameter. A couple of hundred grams in your tires will make an enormous difference that you will feel right away.

The question is what tires will fit on your rims without distorting the profile. That's a question for your LBS. I really don't know what's available in 26". Is that the same as 650?

[Becky]

I really don't know what's available in 26". Is that the same as 650?

Nope. ISO bead seat diameter for 26" wheels is 559 mm vs. 571 mm for 650c wheels.

[Catrin]

Thanks everyone, Ms. Explorer is coming home from the LBS this evening so will ask about this. Probably not in my budget anyway unless my tires are showing signs of wear (I think they are fine) but it is worth considering. Hadn't thought about weight... I don't know if my wheels can even take a skinnier tire...