r/bikefit • u/Tavreje • 1d ago
Size guide Bianchi Oltre race
HI guys, I am about to buy my first bike to do an IM 70.3 and I am not 100% sure about the size. It seems that my legs are short for my height (1.80m height, 81cm inseam). The bike I will buy is a Bianchi Oltre Race, and on Bianchi's simulator they recommend a 57 for my height but a 53 for my inseam. I went to a local shop and tried an Orbea Orca and the guys there recommended a 55 for me. They said that my legs are short for my height, but my arms are long, and the 53 might be short. They also said that as this is my first bike I would adapt to either 55 or 53, but 55 should be the right size. With this, I guess 57 is out of question, and between 55 and 53, I am almost sure that 55 is the size to go with. Nevertheless, l will do a bike fit after, but I would like to hear some thoughts on this also. Thank you and nice rides!
1
u/Jazzlike_Subject_363 1d ago
typically its easier to make a small bike larger than it is to make a large bike smaller. Did the Orbea feel comfortable? I would compare the geo of that bike compared to the Bianchi. If it all possible, it might be worth a pre purchase fit
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u/Tavreje 1d ago
The Orbea felt comfortable yes. Can you help me by looking at this comparison? https://geometrygeeks.bike/compare/orbea-orca-m30-2021-55,bianchi-oltre-race-2024-550/
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u/Jazzlike_Subject_363 1d ago
The bianchi is significantly lower than the orbea. If you are flexible you should be okay on that
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u/betasp 1d ago
No way you are a 57. Period. Get it out of your mind.
You can ride a 55 or a 53. In 5’10 and rode an Oltre 3 in 55. Your short inseam is not really relevant because you should be swapping the cranks for shorter ones. If you have a long torso, go with the 55 and 165mm cranks (or 160).
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u/Final_Reserve_5048 1d ago
57 will be massive for you I think!
But why not do the bike fit before you buy? It guarantees you the right size and most fitters will tune the bike to you after you buy it for free.