Hey, found a used 2010 m/l giant tcr advanced sl for sale. Was wondering what you guys think about the fit for my size. I'm 5'10" with a 32" inseam measuring with a book up tight against the goods. I'm kind of a newbie to bike racing, but would like to go ahead and get something nice instead of buying a bike and wishing I bought something better later. Thanks for any help guys.

Do some more research on "fit calculator" to establish a baseline of sorts.

I'm 5-10 and my giant fcr is a medium fits good.

I have a buddy your exact dimensions and he rides a M/L TCR and it fits perfectly.

You will hear a lot of guys on the 41 suggest you would fit better on a Medium because a lot of guys on this forum try to emulate pros even though they don't have the goods to pull it off.

Thanks, so pros sometimes ride smaller bikes? Thought it would be the opposite . Thanks

A smaller frame allows a lower handlebar height, so a "pro" can get more aerodynamic.

At 5'10", you could go with either a medium or large frame. Your height is in the middle of the two sizes.