I am 6' 1" on a P3 size 58, 90mm stem, no spacers, saddle in forward position and almost all the way forward. 12(ish) cm of drop (? from memory). Got the bike used. 33" inseam. I "could" also go with a 56, but would need 1 cm of spacer and a 100-110mm stem to keep things even. And use the 25mm risers on the Vision armrests; could use the 12mm but these "feel" better and I can keep my elbows and hands closer together for some reason. I also cut the 270mm ski-bend extensions down just a bit so that my hands naturally land on the shifters. Average torso.

EDIT: After thinking on this for a bit, if I were to get a new bike it would be a 56 P2. That would match exactly how I'd want my current P3 to be.

5'9", 32 inch inseam, 54 P2SL and very comfortable.

5' 8.5" riding a 51cm, grey, P2SL.

Can't complain about it, except that I haven't been able to ride it lately.

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~Rob
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"The truth hurts."

Just picked up a P2K and was trying to decide between the 53 and 55. I ended up getting the 55 and have it set up on the trainer. 20mm of spacers on a 90mm long syntace stem with the post in the forward position and saddle height right at 710mm. It fits like a dream and I feel that I can ride in the aero position for an hour on the trainer which was something that I could not do before on any bike I had set up. I think the drop is about 9-10cm currently.

I am 5'10" not very flexible and a 31.5' inseam. I think I could have gone with a 53cm frame but the head tube was only 90mm tall and I think that would have been not enough for my back issues.

I'm 5'7" and ride a 51cm with 170 cranks, 100mm stem, no spacers. Fits fantastical.

YRMV, but I'm 5'9" and change with a 33" inseam. I've comfortably ridden a 54cm P2-SL with no spacers (120mm HT), but I couldn't get as much drop as I would like. I now ride a 51cm P2 with no spacers (90mm HT). IMHO, it fits, and rides, quite nicely. Then again, I ride fairly steep (PD Tristryke about all the way forward on the rails). So, a 54cm may work for you, but I'd be reluctant to buy it without riding one first.

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Mike Sparks


I have competed well, I have finished the race, I have kept the faith.

5'11, on a 54, no spacers, fits perfect

I'm 5-7" and I ride a 53 or 54cm? P2K with 650 wheels. I find it a touch small and ride it with the seat in the forward position, and with a 120mm stem. If I set the seat back, I feel really tight in the hips and can't breathe properly. (although I do have heart/lung breathing issues with heart and asthma meds every day)

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TriDork

"Happiness is a myth. All you can hope for is to get laid once in a while, drunk once in a while and to eat chocolate every day"

I'm 6'2" with 34" inseam. I ride a 58cm frame, seatpost flipped forward, saddle a little forward of mid-point on the rails.

I'm in this dilemma too. I'm just a hair under 5'10, yet I only ride with a saddle height of 73.5cm as I have a small inseam for my height.
I see people who are 5'11 saying that a 54 fits perfect, and people who are 5'9 saying a 54 fits perfect...
Anyone have a pic of a 51 P2C set up with a saddle height of 73 or 74cm???
I tried a 54 recently, and didn't need many spacers for the bars, but in order to not be reaching way out for the armrests, we needed to put like a 7 or 8cm stem on it, and that was with the saddle pushed pretty far forward. And if it matters, the standover height of the 54 being around 77.5cm, was basically just touching me when standing over the bike.
I'm thinking a 51cm would work better for me, even if it means I might need 2.5cm of spacers??

6'0", 56, professionally fit, feels great. Seatpost in aft position, saddle more or less centered.

Find a professional fitter before you buy your bike. It will be one of the best investments you can make.
That being said, I'm 5'7'' and ride a P2-SL size 54, forward seat angle (79-80 degrees), 90mm stem, 20mm spacers (these are temporary, while I work on my flexibility).

I hope this helps.

6'2", 55 cm P2K. 100mm stem, 21.5 cm drop. Seat post in forward position but on the front of the rails. 1 cm in front of BB.

6'1", frame size 58cm. Saddle on the forward attachment to the seatpost but kind of mid/backside of the rails. My saddle height is 82cm (with Shimano pedals) - same as on my race bike.

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_____________________
Don't forget to attack!

Spring for a professional (FIST, etc) fitting. Use the $ you saved on buying it new to make it fit right.

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cs@sbrshop.com
http://www.sbrshop.com
212.445.1010

I'm around 6'1.5" and ride a 56cm P2. I came pretty close to ordering a 58 and am very glad I didn't because in my case it would have been too long.

What size do you ride in yellow? ;)

I am 6" 1.5" and was fit on a 56. 58 was too long for me.

Brad

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3SIXTY5cycling.com

6'2.5" and I ride a 58 P2 (2009 carbon)

I don't know my exact inseam, but I have very long legs, specifically long femurs, and a shorter torso. my legs would fit a 60cm frame, but my body would be closer to a 56-58. The P2 works for me because of the taller headtube (more stack) and shorter reach. I have to raise the seat very high on a 58 to accomodate my legs, and on a "lower" frame, there is just too much drop (P3 would not work for my body unless I really stacked the spacers). As it is, I have additional spacers and am in a pretty aggressive position. I also ride a very short stem, but not exactly sure of the measure. Seatpost is in the forward position, but seat is generally centered on the rails.

I tried to fit on a B12, but couldn't make it work. There wasn't enough seatpost on the 58 to accomodate my long legs (not sure if there is an extra long seatpost available) and the reach on a 60 cm was too much. in fact the reach on the 58 even seemed to be a little too much for me. I have been told that some of the Scotts would also fit my characteristics well, but I haven't ever ridden one.

I ride a 58 cm CAAD9 road bike, which also has a tall headtube.

Without knowing anything about your body type I would say you should probably start on a 56 unless you have some strange body characteristics.

5'6", size 51
other info:
80cm inseam, 71cm saddle height
15cm pad drop, 3.2cm in front of bb, 90mm stem

I'm right with you, 6'1" 33" inseam and I am on a Dual 56cm with the seat post full forward and the seat jacked all the way forward, with 15cm of drop, 80.3cm saddle height, 90mm stem. I feel a bit scrunched and also like I am a kite in the wind, but I can't go lower without having hip angle issues. I was fit on that frame and believe it to be the best I can get with what I have. I am having a FIST fit on Monday and hopefully will come out of that with a better position and different stack and reach numbers. I think I will end up being on a 58 Cervelo, probably a P2C, maybe a P3. I'll let you know what the verdict is, I am itching to get a new frame/position and start adapting! I think the old rule of thumb has always been ride a size smaller than your road position (I ride a 58 solid) but for my proportions and current frame it's not working.