Tire Size

[Grog]

Yes, the less rolling resistance, i.e. less surface of your tire touching the pavement, i.e. less surface of your tire keeping the bike upright.

Frankly, I'm not even sure I'd do 700X20, but I'd certainly not go any smaller than that... Even if there were millions of $ on the line (which obviously there aren't), I don't think I'd risk my collarbone or brain for a few tenths of a kilometer faster on my average speed.

But of course, if you try it, please report to us with the results!

[violette]

Thanks for the info. I don't race, just ride. I was just curious, because I tried a Spe'd Tarmac once with smaller tires and they were FAST. But then again, the Tarmas is more of a racing bike.

[aicabsolut]

Thanks for the info. I don't race, just ride. I was just curious, because I tried a Spe'd Tarmac once with smaller tires and they were FAST. But then again, the Tarmas is more of a racing bike.

Yeah, it may have been more the bike than the tires. The Tarmac has a "snappier" more responsive ride, and it could have been lighter, stiffer, etc. from what you're used to. There's more to the ride than the tires, but you may notice a difference in ride quality and responsiveness between different tires (treaded/all-condition, slicks, different brands, different types of rubber, etc.) as well as with different widths of the same tire.