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55cm is 55cm, right?

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55cm is 55cm, right?

Old 08-31-11, 04:42 PM
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MichelleOH
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55cm is 55cm, right?

I am looking at two 2010 Trek Pilot's. One is a WSD model and one isn't. They are both 55cm frame size. That means they should both fit me the same, correct?

Sorry if that's a silly question...just seems the non-wsd model felt a bit bigger.
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Old 08-31-11, 04:48 PM
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The size typically references the seat tube length. The other dimensions could be different, this includes top tube length, head tube length, seat tube and head tube angles, chain stay lengths, etc, etc.
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Old 08-31-11, 04:50 PM
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Originally Posted by MichelleOH View Post
I am looking at two 2010 Trek Pilot's. One is a WSD model and one isn't. They are both 55cm frame size. That means they should both fit me the same, correct?

Sorry if that's a silly question...just seems the non-wsd model felt a bit bigger.
No, they won't fit the same way. WSD frames are usually shorter toptube-wise to accomodate women's shorter torso relative to overall height. Most women's height are in their legs, hence the shorter torso.

Chances are the 55cm WSD's toptube length is gonna be a tad shorter than the regular 55cm Pilot.
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Old 08-31-11, 04:51 PM
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Right...I understand the top tubes could be different. Just wanted to make sure the tube should be in the same place when I stand over it. Thanks.
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Old 08-31-11, 04:55 PM
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Originally Posted by MichelleOH View Post
Right...I understand the top tubes could be different. Just wanted to make sure the tube should be in the same place when I stand over it. Thanks.
Honestly the standover is pretty much the last thing you should worry about, within reason of course. With that said, there is no gaurantee they will be in the same place.
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Old 08-31-11, 04:55 PM
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Look for the top tube size.
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Old 08-31-11, 05:00 PM
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I'm having trouble finding specs on the bikes I'm looking at. The 55cm WSD Pilot 2.0 model is $900 new/old stock. The 55cm Pilot 2.1 non-wsd is $700 pre-owned with 800 miles on it.
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Old 08-31-11, 06:47 PM
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I received a PM, but cannot reply since I don't have enough posts...so, here it is!

Hi, and thanks for your thoughts!

I'm 5'6" (maybe 5'7" first thing in the morning) but my inseam measures 32.25" (margin of error for two people that don't know what they're really doing using the book method). I have also been trying to find charts and am not having any luck, but thanks for looking! I'm going to ride both bikes again tomorrow, the issue is they are at different locations, so hard to compare side by side.

Also like the 105 group bike better for the components...which happens to be the non-WSD. I know I can switch things around to make it more comfy, but I just don't know about that top tube. I had about an inch and a half clearance on stand over (with the seat poking me). Not sure where stand over height should be measured.

Thanks again!
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Old 08-31-11, 07:12 PM
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Definitely measure on your own, manufacturer sizes (like has been said earlier in the thread) can be of totally different dimensions on the frame. I always go by top tube size, center to center (effective top tube length for compact frames), because chances are the seat tube isn't too big (again, modern frames, compact geometry) so you can put the seat up. Although unless you have pretty long torso, you will definitely want to try the bike out first since I have a longish torso and ride a 54 (54.5cm top tube) and I'm 5'9.5".
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Old 08-31-11, 07:16 PM
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FWIW, the men's frame geometry may suit you better.

It did for my daughter-in-law on a Trek Hybrid, anyhow.
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Old 08-31-11, 07:17 PM
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Personally I would not guide my decision based in the stand over because it depends of a few factors but pretty much if the guys designed 2 bikes exactly the same but with a difference in how high the top tube is, you could end up with the wrong frame size.

Last edited by ultraman6970; 08-31-11 at 07:27 PM.
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Old 08-31-11, 08:11 PM
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Agreed that standover doesn't mean squat. Assuming you're able to test ride these bikes, pick which ever one feels right.
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Old 08-31-11, 08:35 PM
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Thanks, everyone! Wish I could try the next size down, just to test them out. Problem is, these are both 2010 models.
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Old 08-31-11, 08:41 PM
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Dont see whats the problem.
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Old 08-31-11, 08:59 PM
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I understand it like this: If a manufacturer makes a bicycle that fits people that use 58 cm frames, then they call it a 58 cm frame, regardless of whether there's actually any place on it that measures exactly 58 cm.

With the woman-specific design, I would assume that the point of its existence is that it will NOT fit the same as the regular frame. It's not just a normal frame painted pink.
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Old 08-31-11, 09:02 PM
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It truly sucks that Trek doesn't publish the geometry on these bikes. Having said that, I think the 55 would be too big for you. Or rather, it's more likely to be too long for you. A slightly too-small frame is an easier fit than a slightly too-large frame.

However, if you can test the in-shop model for fit and it works for you, then you'll know. I doubt the difference between the WSD and mens model is all that much in this size range. Most of the women I ride with have non-women specific frames, and they range from little leprechaun-sized on up.
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Old 08-31-11, 09:07 PM
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Originally Posted by urbanknight View Post
Agreed that standover doesn't mean squat.
No, not until you land on the top bar. Then it will matter but not as much as the pain.
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Old 08-31-11, 09:09 PM
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Originally Posted by MichelleOH View Post
Thanks, everyone! Wish I could try the next size down, just to test them out. Problem is, these are both 2010 models.
I understand your problem, and I suggest trying current Trek WSD frames in 52 and 54 cm, just to find your ideal. Trying to visualize your height and proportions, I'm guessing the 54 is going to hit it. But after trying these sizes you'll know whether one of these Pilots will work or you should hunt for a better fit.

Last edited by oldbobcat; 08-31-11 at 09:17 PM.
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Old 08-31-11, 09:13 PM
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The manufacture's numbers are almost meaningless. There appears to be no industry "standard" with respect to taking any measurement.
And often (by Trek, for example) the geometry "chart" doesn't match this year's bikes. Sometimes, "close" isn't good enough.

You have to put YOUR body on the bike you are buying. Buy it only if THAT bike fits you. Dealer's fit promises are like a politician's promise of prosperity.

P. S. I'm a male but all 5 of my bikes are WSD's. Why? They fit ME better. Bicycles have no gender.
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Old 08-31-11, 09:19 PM
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I agree with the last 3 posters. The 54 should do it just right, 55 will be the limit, more than that is going to be way too long. As for the 52 that somebody suggested it will be to small everywhere and even more with the long legs she has. But u never know until you actually ride the bike.
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Old 08-31-11, 10:06 PM
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Originally Posted by trek2.3bike View Post
No, not until you land on the top bar. Then it will matter but not as much as the pain.
Alright, point taken. It doesn't mean anything as to how a bike will fit while you're riding it. How many people land on their top tube on a road bike anyway? I can understand this on mountain bikes, but sheesh!
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Old 09-05-11, 05:43 AM
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I bought the WSD version of this bike. It just felt better overall (I think). Thanks for all the thoughts!
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Old 09-05-11, 06:07 AM
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Originally Posted by MichelleOH View Post
I'm going to ride both bikes again tomorrow, the issue is they are at different locations, so hard to compare side by side.
But you do have a measuring tape, piece of paper, and a pen ... right?


Originally Posted by MichelleOH View Post
Not sure where stand over height should be measured.
It shouldn't be measured ... unnecessary. Obviously if you can't stand over the top tube, you might want to consider a smaller size, but the standover height of a bicycle is much less important than the top tube length.


And now that you've purchased a bicycle, measure it and record those measurements for future reference. When you get your next bicycle, you'll have an idea what size to get.

http://www.bikeforums.net/showthread...f-Measurements

http://www.parktool.com/blog/repair-...-position-road

Last edited by Machka; 09-05-11 at 06:16 AM.
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Old 09-05-11, 06:22 AM
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Thanks. I have requested the measurements from Trek. When I get them I will double check mine against theirs and put it in my "bike" folder.
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