Here is a recent question that we get a lot at the shop.  

I have a 2000 Specialized Expedition Sport I'd like to try and semi-convert into a beginner triathlon bike. About how much would I be looking to spend to get more appropriate rims/tires? Is there anything else I should look at having done? I don't want to spend a lot of money but would like to have a plan.


Jeff,

Great question, this is one we get a lot.  I would look at replacing just the tires, keep the same rims/wheels and just fit the narrowest tire on the rim you can.  This would most likely be a 700x28 or 700x32. This will give you some more speed, reduce your effort and help the bike roll faster.  Additionally from what i remember that model comes with a suspension seat post, i would swap that out for a rigid post , this will help you pedal more efficiently and generate more power. Other options would be clip less pedals to help increase efficiency, and perhaps stop by a local shop and have the bike re-adjusted fitwise to accommodate this new goal.  Having your position tweaked to cater a little more towards faster riding could help you waste less energy. 

Tires would run about $42 a piece for a good flat proof tire, plus install $13 a piece, you will also have to replace the inner tubes to accommodate the smaller tire, they are $7.99 a piece.   A new seat post is about $45. Pedals range in price and you may need shoes to work with them.  A fit is something that may be quick and cost very little or could cost upwards of $125.

If you really love triathlons after doing one or a few, take a road bike for a spin, i guarantee you will see the difference right away.

Hope that helps and thanks for the question