Confused with bike sizes - what should I be looking for?
05-11-18 | 08:36 AM
#1
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Joined: May 2018
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Confused with bike sizes - what should I be looking for?
I’m in the market for a new road bike (for a Triathlon) and I’m not sure on the size. I have a Fuji Newest size 50 (I believe it is the right size) and I’m looking into upgrading to a GrandFondo. I checked size 46 and I’m not sure whether it is the right size. I’m a female, 5’ 3” (160 cm) with an inseam 29” (73.6cm). It is the perfect bike (components, budget), felt OK on the short ride around the block but I’m worried I’m getting a bike that is too small and would have a negative effect down the rode.
any recommendations? Should I look for an independent bike professional who can guide me?
thanks!
any recommendations? Should I look for an independent bike professional who can guide me?
thanks!
05-11-18 | 11:51 AM
#2
Master Sarcaster
Joined: Apr 2006
Posts: 527
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From: DFW, Texas
Bikes: 2018 Allez Sprint, 2016 Trek Crockett Canti
you'll see a bit of difference between brands in sizing. Honestly, your best bet is to go to a shop and have them make sure you're getting the right size. I wouldn't buy online or from a private seller unless you absolutely know what size you need. Most good shops will do a basic fit with a bike purchase. My wife is in the 5'3"-5'4" range and rides a 49 (Specialized) so depending on brand, a 46-50 sounds like it could be made to work.
05-11-18 | 02:49 PM
#3
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Joined: Jun 2010
Posts: 43,586
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From: NW,Oregon Coast
Bikes: 8
... what should I be looking for?
A Tape Measure.
'Size' is often meaning length of the frame seat tube,
implied is the top tube is proportionally shorter, as well ..
walking into a brick and mortar bike shop is educational,
you can try on several size bikes, ride them briefly..
...
A Tape Measure.
'Size' is often meaning length of the frame seat tube,
implied is the top tube is proportionally shorter, as well ..
walking into a brick and mortar bike shop is educational,
you can try on several size bikes, ride them briefly..
...
Last edited by fietsbob; 05-12-18 at 10:42 AM.
05-12-18 | 08:04 AM
#4
Full Member
Joined: Oct 2015
Posts: 219
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From: Mitchell IN
Bikes: Trek fx 7.2, Raleigh Tamland
At 5'3" and a 29" inseam, I'd recommend talking to a fitter. It sounds like you have really long legs and a shorter torso compared to "average" people of that height. I have the opposite problem lol.
05-12-18 | 03:54 PM
#5
For The Fun of It
Joined: May 2007
Posts: 6,140
Likes: 2,012
From: Louisissippi Coast
Bikes: Lynskey GR300, Lynskey Backroad, Litespeed T6, Lynskey MT29, Burley Duet
With bicycles you can normally fit within several sizes. Email Fuji and ask them what size they recommend for your measurements. Whatever they recommend, get that size and adjust it to fit.
05-12-18 | 04:19 PM
#6
Senior Member
Joined: Mar 2018
Posts: 121
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From: Indiana
Bikes: Felt Z5, Look 675 Light, Specialized Diverge
The most important factor is how the bike feels when you are on it. I currently have 3 road bikes that are sized, 57 cm, 58 cm, and 60 cm and as far as I can tell they are all the same size. So you really cannot use the stated size other than generally. Most LBS's will measure you a little and make a recommendation on size. Do that and start with that. Most allow test rides, by all means, do it. If the bike feels right, it probably is. If the bike doesn't feel right, and they can't adjust it, it's NOT the right size. No bike ever feels better as you ride it longer. The pain just gets worse.
