Good Evening:

I am interested in the Canyon roadlite. I really love the components and look of the bike. The thing that is throwing me off, is the sizing and geometry.
The recommended size for me is size medium (i'm 72 inches, and inseam of 32). However the stack and reach recommendations work better for me , in the size large, based on my current bike (2020 trek fx3, with 120mm stem, instead of the 100mm original).
But the large has a 81mm standover, while the medium has 80cm . Other bikes like trek fx, Specialized Sirrus, and giant fastroad, all have my size like my fx3, and standover is less than 80cm.

Should i get the large, or just skip this bike ?

Same height as me, although my inseam is a little longer at 34 inches (depending on how you measured it). That usually puts me right between M and L on Canyon sizing and I always choose L because I have long arms and also prefer the higher stack. Standover has never been an issue for me.

I measure by placing a book between my legs and up against my crotch as if I’m sitting in a saddle and lean against the wall , and measure to the top of the boook that is in contact with the crotch

Yes, me too. It is important to have a very thin and large "coffee table" type book, or a clipboard. Shove it up against the tendons in your crotch good and firm (move "things in the way" to one side), but not so much that you are obviously manipulating the measurement longer than implied or trying to lift the subject off the ground. Keep the book at 90 degrees to the wall. Take the average of three measurements. I have read to do this in your thin cycling socks, and a framebuilder I worked for did it this way.
FYI: my cycling inseam is 867 mm, (33 and 15/16ths of an inch). I had a long torso/short legs as a youngster, but over time I lost torso length faster than leg length. I am 5'10", about three quarters of an inch shorter than 43 years ago when I got a custom racing frame.

Okay, same method I use. So I'm at least a couple of inches longer than you in the inseam. So in relation to inseam M sounds right for you. What saddle height do you run? I'm at 780 mm on my size L Canyon Endurace, which has a frame standover of 832 mm. Canyon list the Roadlite at 828 mm standover for a size L, not 810 like you mentioned in your first post. Medium is 802 mm in line with what you posted.

So the bottom line is that your meat and two veg are likely to be pretty tight standing over a size L Roadlite. With shoes you might still have a little clearance.

If you don't comfortably fit on a M with those body dimensions, I'd book a session with a bike fitter because, well, you should.

it’d definitely 81 for the large

are you implying I should stay away from the large?

Here's a link to the geometry chart. https://www.canyon.com/en-us/hybrid-...rahmenfarbe=BK

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Sorry, I was looking at the CF version. You are right it's 81 cm for large, but actually 78 cm for Medium (for the aluminium version).

No worries. I think i should be ok with the large, because the New Trek Fx sport carbon, have 81 standover height, the sirrus x line have standover height of 81.2, and those fit me just fine.

Is the stand over height, in terms of how it is measured, universal?

are you measuring the saddle height from peddle axil, or center of bottom bracket to top of seat, aligned with seatube?

I don't think the standover measurement is universal across brands, but should be close enough. I think you'll be fine too.

Centre of BB to top of saddle at the mid-point of the saddle (so not aligned with seat tube). My cranks are 172.5 mm

For future reference, it's pedal, not peddle, and axle, not axil. Pedal and peddle are words with very different meanings. Axil is not a word except as a brand name.

It was actually a hat trick, when you include seatube, which is a concatenated form of sea tube.

What kind of fit are you wanting? This bike is going to give you quite a bit of bar drop from the saddle when at the correct height. The M frame more drop, but the Large frame further from you. So either way you might be more aero than you prefer.

What bikes and sizes have you had before that seemed to fit you well.