Quote Originally Posted by RoadRaven View Post
[COLOR="DarkOrchid"]Hi... me again

Lise... technically speaking 28cm tyres are still "fats".

When you can, get some 23cm tyres (like Triske also describes) which are racing slicks. You can get several tread types, true "slicks" are treachorous on a wet down-hill or heavily cornered ride, but they are awesome in a TT...

If you wanna do a quick check on what will be fastest, check out what the pros choose - def not 28cm...

So, when you can, get some 23cm slicks and make another comparison
Enjoy your experimenting
Hey I appreciate your input!! You make some good points about comparing under various conditions. (I assume you meant Lisa, not Lise)
I can't put 23's on my bike because DH and I ride a LOT of back dirt and gravel farm roads- one of our favorite things to do! Actually, we specifically got our Rivendell road bikes BECAUSE they have clearance for wider tires. You would be horrified to see some of the sharp stoney jagged roads we ride- cut rocks sticking up everywhere like daggers on a lunar landscape! So many you can't avoid them all. The "pros" on their 23's would have been left far behind, fixing their flats all day! But my new 28cm Kevlar tires passed the test of fire yesterday down one murderously rocky road. DH and I decided that any skinnier than 28's and we would start having flats too much. I just feel happy to have gone from 38cm to 28cm- that's a BIG jump for me!

I do think that perhaps the breeze and my cold and other variations might have affected my time on the new tires- there always seems to be "something" working against me. And you're right- a 21 mile ride (which is my daily standard for timing) might only show a difference of a couple of minutes on a good day.
I guess time will tell. Thank you for your helpful ideas!