[Lollapalooza]

I was looking at the geometry of a ton of bikes, spotting out possibilities, and I've come across things that say +30mm or +36mm for their bottom bracket measurement. Is this in relation to the center of the rear wheel (Ex. it would be 13" plus +30mm)?

 

[Lollapalooza]

Sorry if this is confusing but here's what I'm seeing:
http://morewoodbikes.com/bikes/2007/izimu-dh/geometry.html

So what is the BB height on this?

 

[Ojai Bicyclist]

Yeah, it's BB drop. But, you have to think about tires too, so if it's +30mm the BB is close to 15"

On Morewoods the geo is really really adjustable so it's not an issue.

 

[.Danno.]

Yeah, it's BB drop. But, you have to think about tires too, so if it's +30mm the BB is close to 15"

On Morewoods the geo is really really adjustable so it's not an issue.

I didn't see the A-C of the fork in those geo numbers so it's a bit tough to come up with an answer.