Road Bike Size

[maklabouhlel]

Hi all. I want to buy a bike online but I'm unsure about sizing. I'm 5′ 7″ and I could order either a 51cm (5′ 3″ - 5′ 8″) or 54cm (5′ 7″ - 5′ 10″). Any advice please?

 

[maklabouhlel]

What bike are you looking at (as I'm sure others will be able to advise more specifically)?

Personally, given that you are on the edge of both sizes, I wouldn't risk ordering either (especially if it's a fairly expensive bike). I would have though it would be worth popping into a decent bike shop, and trying a few different brands/sizes to get an idea of which way you need to be looking (although bearing in mind that fit/frame size can differ between brands).

Good advice. This is the bike I'm looking at.

 

[maklabouhlel]

I'm 5'9 and ride a 54cm. I wouldn't want a bigger bike. This doesn't help. Sorry.

No, it does help. I think I'll go for a 51cm. They have a free return policy.