due ruote 

+1 I would be quite surprised if it didn't work out.

old's'cool

I'm 5'9" on a good day with a 30" trouser inseam and I would ride that no problem. Until recently, this was my #1 commuter, ridden almost daily. A little close on the standover, but a perfect fit for me when riding.

davester

I don't agree with that. Both center-to-top and center-to-center have been used by manufacturers, bike shops and individuals. In my experience, center-to-top has been more common than center-to-center. The best thing is to always specify c-to-t or c-to-c along with the measurement.

I have the exact same height and inseam as the OP and I usually ride a frame anywhere from 56 to 59 cm c-to-t. The bike shown looks way bigger than 54 cm to me. I'd guess 58 to 62 cm. As mentioned by others, having a little room for the family jewels and having a top tube the right length for your torso/arm length are the most critical measurements. For us older geezers with sensitive backs, it's also best to get something relatively tall in the range so that you can have the stem as high as the saddle.

stumpjumper2076

I bought a Super Sport in 1984 and if I remember correctly Schwinn frame measurements were from center of bottom bracket to top of the seat tube and they used inches not centimeters. I had a 23" frame and the top tube was also 23" measured C to C . Here's a link to the old Schwinn catalogs that might be of some help. Schwinn catalogs, 1981 - 1990 .

Chombi

I'm 5'-8 1/2", but my torso is short and my legs are longer than"normal" for my height (my arms are also on the long side), so I ride mostly 56cm bikes. My minimum ride size is at 53cm.....
So it's different for everyone, depending on your body's proportions......

agmetal

I think they were talking about measuring the top tube length, which is typically measured c-c

Loose Chain

Your pants inseam has nothing to do with bicycle frame size. Measure your PBH, pubic bone height while in stocking feet by standing back to the wall and using a hard bound book shoved up so high your feet start to lift off. Then place a mark on the wall where the top of the book rests. Do this three times and average. That is your real inseam.

I am just under 5'11"" and have an 86cm PBH, I ride a 56cm top tube frame. A good starting point for saddle height is .883XPBH from center of crank to crown of saddle along the seat tube.

The bike in the OP is at least a 58cm frame or close.

canklecat

Looks like a 58, my size. Send it to me, I'll check it out for a few weeks or months to be sure.

bleumeon

Well I confirmed with seller. He says its the 22" inch size which would be the 56 cm equivalent. Only issue is that he said he noticed rust at some of the lugs and want to check the frame with his friend to make sure it doesn't effect the integrity. What do you guys think? Is rust showing up at the joints by the lugs a big deal?

Well I'm still a bit iffy on the size. What do you guys think? A crop from new pictures the seller sent me on the left vs the 58 posted here on the right.

Salamandrine 

Consider asking the seller to measure the standover height: distance from the floor to the top of the top tube. (make sure bike is straight) If the seller is reasonably nice, this shouldn't be a big deal.

Measure your own PBH with a big book or whatever. PBH should be 1-2" greater than standover height for a vintage-ish fit.

Frame size is generally understood to mean Center to Top unless otherwise specified. C-to-C was much less common in vintage time. No guarantee at all the seller knows this.

The rust looks cosmetic. Whether it matters to you, I dunno, but the frame won't break because of it.

bleumeon

I think there was a misunderstanding between the seller and I when we were mentioning frame sizes.

This bike is actually 55 C-C TT with a 58 C-T ST. I could fit it but it would be on the far end for me. Unfortunately it looks like I will have to pass up this bike, but ultimately for the best. Too bad he didn't have it in a frame or 2 sizes down.

Classtime 

I don't know what the asking price was, but that is a bit ugly at the head tube and you can find a nicer bike. However! I read a little about your TREK choice and I think this size bike is a better fit. At one point or another, we all suffer from analysis paralysis and obsess about angles and mm. It must be part of the fun.

icepick_trotsky 

As a data point, I am about your height and also ride a modern bike with a 54.5 TT (CAAD10). Schwinn generally came in sizes 21" and 23", which usually measure out to 53.5 cm and about 57 cm respectively. Some years and some models had a 22" size, but it's uncommon.

I frequently find that I am between the 21" and 23" Schwinn sizes, making them difficult to fit. It seems like you're a bit lankier than me (I use a 110mm stem on the CAAD), so the 23" would most likely fit. I believe that's the size you've linked. But the fit might be a bit french.

For what it's worth, that 600 group is a great one. I have it on my Ironman. The single pivot calipers are great stoppers with Ultegra pads.

bleumeon

Yeah the bike is solid. Good components, some upgraded. The 23" will fit but would cut it close on the stand over and I'm not so sure about fitting into the biggest possible bike for my height and standover. For a commuting bike, especially beacuse it will be ridden a lot I want something properly fitted that rides well.