Hello, I solicits your help for choosing a size Bike.
I will consider taking me a Sirrus Sport but before going to the store, I'd already done
a choice between the different sizes available.
But I hesitate between two sizes M and L, knowing thatit is a sloping frame and the
Top Tube Length is 580mm (22.8") to 600mm (23.6") for M and L.
My inseam is 82cm (32.3"), bust my 65(25.6") , my arm 66cm (26")
and I measure 178cm (5' 10.1")
What do you think, what size bike should I choose?

geometry of the bike HERE

thank you in advance for any help

I'm very close to your size, and a large in the Sirrus fits me perfect. The medium would feel to small.

thank you for your answer,
size L with a length of 60cm over the potence, seems to me can be too: s

Your dimensions are larger or smaller than mine? How tall are you and how is your crotch?

Thank you in advance