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I thought Id give a little update in this thread following my recent commitment to ride to work, I am aiming for a minimum of 3 times a week.

I bought my 2010 Kona Dew Duluxe about two months ago, and have since covered about 220 miles, its a really good bike abut I think i could have done with the next frame size up, but Ill learn for next time.

I am doing 6.5 miles each way and aiming for 3 times a week, I am on my 12th or 14th day of doing it now and have managed to drop my time from 27 minutes each way to 23 or 24 minutes, and I have lost just over 4kg in a month, including a week in France eating a lot of cheese and bread.
I am using Smartrunner to track my rides which is nice to see the miles stack up and the average times come down as the average speeds go up.

Couple of questions,

I currently have Hybrid tyres on the bike, but i was wondering if a slick centre with a bit of grip at the edge will make a difference as the rolling resistance seems quite high on these tyres...

And how much of a difference do SPD's make? or just shoe clips? as my feet keep slipping and turning the pedals over?

Many thanks All