bike tire size ?

gigemaggs99 said:

I have a tire question. I'm looking to buy some Continental Ultra Gatorskin Folding Road Tires and I see they come in 2 sizes, 700x23 and 700x25. My rims are 700x23 but my current tires (specialized Amardillos) are 700x25. What size it better and why? It seems like it's only 2 mm so what is the big difference? Will the 700x23 be hard to install (too tight of a fit)?

Thanks.

Actually, your rims beads are probably more like 19 mm apart or so. With little separating the two tire sizes, except size, you don't really lose anything using the 25. You gain, however, the ability to ride with lower pressure in the tires, allowing you a more comfortable ride. You also gain a larger contact patch with that lower pressure. Last, the 25 will likely have marginally fewer flats.