[Closed] Road bike - What size?

I’m 5”11 and ride 54 but I’m all legs. If your happy on 56 I’d get that. You can make a small bike fit a bigger rider but a bike that’s too big is always too big !

depends, road bike size is best used as a general guide as all manufacturers size their bikes differently and will have differences in angles and tube lengths so one brand's 56 could be very different to another brand

if you're happy with the fit of your Carrera go for the Trek that mirrors that best, even better go and sit on the Trek if you can to see what it feels like

i'm the same size as you and the 58 would fit me better, but i'm not you

I am 6 ft tall and have a 3 year old carbon Domane . I went for the 58 and still had to replace the 100mm stem with a 120mm .My wife has just got an ALR 4 disc , she is 5ft 6in and has gone for a 54 which fits her well and you are 2 sizes bigger than her . Unless they have changed the geometry they are quite short , but as has been said it's best to sit on one first . Don't you have to get a Trek bike direct from a Trek dealer so you can't mail order it , in which case sit on it first .

+2 for all trek dealers giving a free (if not as comprehensive as a retul et al) bike fit. I’m 6’ and ride a 58, ymmv

56cm will give you a more racy ride. 58 if you want to be a bit more upright without loads of headset spacers. I prefer to reach out rather than down, at 6ft I like 58cm frames more or less slamed with a 120mm stem ( most bikes)

What size bike threads never end well.

you should compare the new bike geometry with the old and decide from there.

everyone is made differently and will have different flexibility. Also there is is nothing to say that the people commenting are on the right size bike themselves.

What size bike threads never end well.

So everybody who posts a what bike thread ends up with the wrong size do they

you should compare the new bike geometry with the old and decide from there.

No you should sit on one before you buy , especially as you can't mail order Trek

everyone is made differently and will have different flexibility. Also there is is nothing to say that the people commenting are on the right size bike themselves.

3 six foot riders on 58 , can we all be on the wrong bike ?

Thanks for the advice, I need to buy the bike from Evans so looks like my best bet is to go in.

I was going to order online from Evans, I just wasn't sure if they'd be able to advise properly in store if I don't get the right assistant.

Part of the reason for my post was I'm not as up on road cycling as mountain biking. I know with mountain biking a smaller frame can actually be beneficial, but wasn't sure if the same was true for road biking.

What size bike threads never end well.

So everybody who posts a what bike thread ends up with the wrong size do they.

Posters throw opinions without consideriting the individuals make up. Long legs vs long arms, torso etc three people may be 5.11 but may need different sizes.

you should compare the new bike geometry with the old and decide from there.

No you should sit on one before you buy , especially as you can’t mail order .

if the current bike is too long, short. High. Low you can see this from the geometry chart so you can then find one to sling a leg over.

everyone is made differently and will have different flexibility. Also there is is nothing to say that the people commenting are on the right size bike themselves.

Check out Pics of peoples and you’ll see many seats slammed forward, backwards, tiny stems, massive amounts of spacers etc.

It also depends on the brand of frame , the stem length, bar reach etc and brand of shifter.

Saying I ride a 56 with 100mm stem is basically irrelevant without taking the other measurements into consideration.

self-fulfilling prophecy is self-fulfilling 🙂

In general, sizing down will give lower bars, and more weight over the front wheel. This adds stability, but may need a little more flexibility. Personally, without seeing you, I’d put you on a 56, assuming 73 degree parallel geometry and a 55.5-56.5 effective top tube. You may need a 110-120mm stem for correct reach, but a dealer should swap stems for free.  Evans are not renowned for bike fitting but will swap a standard 100mm stem

Im the same size as you and of absolutely average proportions. Even a 54 could be made to fit, and I’ve ridden frames two sizes too small with long stems to experiment with fit.

Geometry differs from bike maker to bike maker, but 73 degree parallel frames is a standard. Half a degree change is about 1cm for ETT measurements, which I correct with stem. Larger frames won’t have as nice handling.

EDIT looking at the geometry table, I’d definitely put you on a 56. The head angle is 72 degrees and ETT is 55.5, moved back 1 cm for the reasons above. You’ll need a longer stem, probably a 120 mm, but that is perfectly reasonable.  Have several bikes set that way myself.

Phone up your local store, ask if they have a bike fitter and a Domane in a few sizes and go in. Our resident Scouser bike fitter is very good and the shop wants to get you the right size. Also bear in mind the right bike guarantee, if you buy the 58cm and aren't happy then just take it back in within 30 days and get the 56cm instead.

3 six foot riders on 58 , can we all be on the wrong bike

It is a subtle point, but other manufacturers frames might be a better fit, particularly when between sizes. A Giant TCR in ML would be a 57 and Perfect for someone is foot. Just fitted my nephew to one who is an inch taller. Sizing is a bit of a minefiekd, but understanding geometry is not.

pros don’t have this problem because mostly, their frames are custom made, even though apparently common.

5'11" too, riding a 56 2015 Domane 5.9. I have long legs so swapped the 135mm seat tube cap for a 175mm & use a 90mm stem.

I went to one of my local Evans stores that had a 56cm Domane AL3 in (the model above the one I'm after) and it seems to fit fine. I'll be ordering one in a few days.

Cheers everyone for your help!