how do I measure my frame?

[Raging Squirrel]

The time has come to sell my Boardman
How do I measure the frame? Is it from the BB to the top of the seat tube?

 

[Garz]

It will be S, M, L, XL - just measure your seat tube and apply to this wiggle site (click - "size guide" tab) or boardmans (assuming road bike as you never disclosed...):

Linky

 

[vickster]

Op has a hybrid looking at his sig. Look on the halfords site for the measurements based on the size

 

[jim55]

measuring the top tube is the most important size btw boardmans use sizes as above but the top tube size will say a lot(from cetre line of seatpost to centre line of headset)

 

[biggs682]

centre of crank bolt to centre of seat pin bolt is a good start then centre of crank bolt to top of seat tube along with centre to centre along the top tube and state all 3 on listing .

 

[compo]

I can't make head nor tail of modern bike sizing. It seems they have a 6" seat tube and 3 feet of seat pin sticking out. OK, I am exaggerating, but the old style method of measuring frames seems to be less relevant nowadays with sloping top tubes and smaller frames generally.