Cervelo Bike Fit - P2 / P3

I'm 5'11" and 33.5" inseam. I ride a 54cm P2 and I fit perfectly on my bike (I've done 200km+ rides on it without any fit problems)

The shorter stem might solve your reach issue. Based on your inseam you have a longer torso to legs ratio so I'd be worried about the stack. You'd have to really lower your seat post (hopefully not need to cut it down), and with the taller headtube (190mm for 61cm vs. 160mm for 58cm) you might end up in a rather non-aero position.

The rule of thumb with the fitters I know is its better to have a too small frame and add spacers / stem than to have a frame too big and to be stretched out.

I would definitely keep looking for a 58 (have you tried 56cm for comparison?)...  A P3 might work because of the shorter (175mm on 61cm) headtube.... big maybe....

Thanks for the replies.

I can get a 58cm but not as part of the deal (as it would arrive after 31st Jan), so to pay $1000 more really hurts!

I just assumed that the 56cm would be too small......I ride a 58cm Cervelo S1....would the tri bike size usually be the same as for a road bike or larger/smaller?

I can get a 56cm or a 61cm as part of the deal, what do most people ride being my height?

I'm between 6'1" and 6'2", I want the best fit to make the most of the aero position, but not crazy agrressive.

Thanks again

I would at least try the 56cm frame.  It might fit perfectly but if its a touch too cramped you could put on a 120mm stem and have a fairly aggressive (long and low) TT bike setup. 

I rode a 56cm Fuji roadbike before getting my 54cm Cervelo P2 - some road cyclists go down a size on a tri bike. Its very individual. And you probably know the frame sizing nomenclature can be pretty meaningless between brands.

Random -- did you ask your bike shop if they would still honor the deal if the bike arrives after Jan. 31? I test rode both a 51 P2 and a 54 P3. They both fit, but I preferred the price tag of the P2 -- but the one P2 in my size they had was already promised away. When it was clear I was going to walk instead of taking the P3, the shop brought out the manager and he agreed to give me the deal on the P2 even though it probably won't arrive until mid-February.

Worth a shot?

Thanks for all of the replies, it is really very much appreciated.

I asked at the bike shop about order times, and Cervelo dont have any P2 or P3 58 Ultegra's avaiable in stock to send out, if they order now they wont arrive until Mid/End Feb and they say Cervelo wont honor the deal.

I will look at the 56 P2 and P3 as I think they have them available, sounds like people my height are riding them, so its worth a shot...

Thanks again