circumference of 700c wheel with Schwalbe ultremo tyre?

[fergus]

I'm stuck at work without a tape measure of any sort, and have just bought a bike computer. Anyone know the rolling circumference of a 700 * 23 tyre to enter into the unit?

I'm going to attempt the Richmond park 3-lapper tonight and wanted to see my ave speed.

[pdV6]

2096mm according to Cateye's website. Of course, your actual tyre may be slightly different to this but it'll be close.

http://www.cateye.com/sites/cateye/upload/manuals/...

[Nick_F]

Sheldon says 2097mm here

[fergus]

thanks chaps. What's one mil btwn friends?

[pdV6]

fergus said:

What's one mil btwn friends?

Indeed - you'll probably get more error than that measuring it for "real"