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forum
Road bike sizing help
Looking to get a Wilier GTR and my height is 174cm, inseam at 81cm.
My old bike's effective top tube is 545mm and I use a 100mm stem with a 172.5mm crank arm.
For this new bike, it comes with a 170mm crank arm, 100mm stem. The size I am looking at is the S size, which gives an effective top tube of 523mm.
Does this new bike fits me well, if i plan to install a 120mm and slam the stem?
Or should I go for a M size, which gives 537mm effective top tube and a 100mm stem?
Between these 2 sizes, the M's head tube length is 145mm compared to the S's head tube which is 115mm.
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.
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3 comments
In danger of sounding a bore... If you're dropping money on a quality bike get a fit from a decent bike fitter (not the shop lad who's 'been doing this for ages').
I thought my position was fantastic; slammed front end, nice and flat, low, sleek... But I'm faster and put out more power in my new position after having a fit session.
It is easily the best upgrade you'll buy.
Have a look at bikecad.ca where you can put the dimensions go both bikes in and compare the results
If your current bike fits you well and you get the Wilier in a small expect your saddle to bar drop to be pretty damn big. You need to ride it.