Originally Posted by
save10
When looking for a TT bike do you use the same top tube measurement as your road bike?
(disclaimer - I already bought a TT bike on craigslist recently and I've adjusted everything and it seems right)
I supposed I should have asked this question before I bought it but the deal was great.
General rule of thumb is one size smaller than your road machine. But this varies as I found with my Ordu. It was one size down from my road machine but still too big. Ended up on a Transition, but those are stack and reach bikes so I could have bought anything up to a med and made it work.