BSL and center mounting question

the BSL does differ between brands of boots for the same size and is usually less than a cm difference for the same size, which you should definitely get that much adjustment in your bindings. if your size changes by a size/size and a half and you change brand you could be looking at a cm or so difference within boots but most bindings have at least 2 cm of adjustment for forward pressure adjustment (some i know have a little less than others- FKS for example) In reply to your query about not being entriely centre mounted, the difference will be negligable ffor a change in BSL of a cm or so as the difference in weight centre of the boot will be probably smaller than the change in BSL.

If you mount center for your current boot's BSL:

this happened to me and the difference was noticeable. make sure you end up behind center, a litte behind is way better than forward of center.

My park skis have been mounted +1 of dead center for two seasons now, they ride just fine. They kill it switch. the only downside is when Im skiing hard, I do feel like Im way over the tip. I am 6'2'' on some 176s tho.

all my skis have been +1-3 from TC after watching slandy promo a few years back

Thanks for the info everyone, helped a lot.  I think i'm going to wait until I sort some new boots out first - I have a feeling i'll be looking for a slightly smaller boot, so don't want to end up forward of center if I can help it.

Hey guys, I just got my first pair of rockers! Cant wait till this winter! Anyway, I dont know where I want to mount my bindings for optimal performance for me. Heres my breakdown.  Skis are 2012 K2 ObSETHed- 189. Bindings are Rossi Axial 2 140 XXL.  ( I have already passed my first huge dilema in deciding between Look  P18 and axial 2... came down to $171 vs. $308... I got the Rossi, it was hard to change, Ive been on the Pivot for the past 7 years!! I am 6'3" 215#, athletic, aggressive, more old school skiing style.(Read: im 38, only switch ride on groomers when I m with the kids or widfe to entertain mystelf) Not too much park. learning rails. Intermediate at boxes, advanced at jumps and airs. I want these to perform well through  Moguls ,and  rip groomers on my way to find the tree stashes! My previous ski is a 2005 Volkyl Karma. My approach to skiing is: 1. I ski inbounds . search for all steep and deep, and love trees. I am thinking of mounting at +1.5 from traditional, which equals -6 from core center. Ive read reviews to say a slight forward mount as such will help the obSETHed manuvuer better in bumps and short radius turns. I dont want to go too far forward and hurt its Powder performance, but I am eager to learn these new styles of riding with rocker !! My BIG question is this!! The obSETHed has a 40cmrocker tip and 20cm in the tail ... and if I mount forward, will that take away my edge hold when its needed most in FIRM , STEEP, GNARLY terrain??? On the other hand I have read that a slight forward mount from traditional helps to control the wheeleis out of cliff/cornice  drops. ( Mind you my limit is 15' )

So my thoughts are traditioanl or +1.5 from traditional . Opinions???