If you're size 10 shoe you're probably like 9 in boots, definitely don't get a wide.

 

If you fit into 10 US reduced footprint you can but you don’t have to depending on how hard you tilt the board (depends on the board though, for example Yes Underbite boards in wide are quite a bit narrower at the inserts than most wides).

 

Hi Mt,
A correctly fit snowboard boot will always be smaller than a correctly fit shoe, so we know that we have an issue there. Rider height is not a factor in board sizing, but barefoot measurement is crucial to getting this right. Please measure your feet using this method:

Kick your heel (barefoot please, no socks) back against a wall. Mark the floor exactly at the tip of your toe (the one that sticks out furthest - which toe this is will vary by rider). Measure from the mark on the floor to the wall. That is your foot length and is the only measurement that you will want to use. Measure in centimeters if possible, but if not, take inches and multiply by 2.54 (example: an 11.25 inch foot x 2.54 = 28.57 centimeters). For width please place the inside (medial side) of your foot against a wall. Please then measure from the wall out to the widest point on the lateral (outside) of your foot.

 

24 cm long X 11.5 cm wide, and yes that is the right width.
Problem with boots and shoes is finding a pair wide enough that it doesn't hurt. Having once rented a pair that i think were size 9 or 9.5, maybe 10, they caused strong pain in 20-30 minutes out on the slopes. Within the small budget I had last season, size 11 with regular laces were the smallest I could afford that didn't start hurting a while after I tried them on. Even so, they are just barely tolerable with high arch inserts, still need to wear them in enough for the liner to pack out.
Now MAYBE an expensive boot size 10, dual boa, good liner, from a brand like DC that's known for making wider/beefier boots could work out. Might need to get custom orthotics too. My hopes are not high for finding a size 9 though.

Sorry for the thread getting kind of off topic.
Reason why I made the thread is I'm looking at two used rocker/flat/rocker boards that both look good, 161 cm wide 2012 for $90, and a 160cm average width 2009 with a little more rocker/powder design for $80.

 

Hi Mt,

24 cm is Mondopoint 240 or size 6 US in snowboard boots. 11.5 cm would be EEEEEE (6E) width at this size. Possibly there is a measurement error. Please post up 4 images of your barefoot width and length measurements (for each foot) being taken. Please show the whole foot, the wall, and the whole ruler in each image.

 

Left foot is around 25.7 cm long X 10.5 wide, right foot is 24.5 cm long X 11 wide

 

Got it. To answer your original question, you will not want a Wide or a Mid Wide board. In fat you will be looking for narrow models. Your larger foot is Mondopoint 260 or size 8 US in snowboard boots. Your smaller foot is a low Mondopoint 250 or size 7 US in snowboard boots. 11 cm Wide is a EEE width at size 8. I would strongly suggest the Burton Ruler Wide or Burton Photon Wide in size 8 US.

STOKED!

 

Thanks for helping me figure that out. I didn't find any burton wide when trying on boots before buying the pair I have though, but I did try out a salomon dialogue wide in a size 9 or 10 and even that wasn't wide enough for my right foot. Hopefully I can find a shorter boot that fits.

Just out of curiosity, at what boot size should people be looking at a mid-wide and wide board?

 

Correct. An E width boot would still be far too narrow. You can see on the chart below that you would not have adequate width in an E width boot until you were at size 10.5 (which, of course, you do not want). You need EEE width at size 8 (the two Burton models that I suggested). Board width is determined by barefoot size not boot size. You will not want Wide or Mid Wide in any board models.

https://www.wiredsport.com/width2.JPG

 

Well I hope those burton models fit. It would be a surprise if they did, given my personal experience with shoe shopping, I have bought 4E shoes that I painfully regretted. Even my current pair is a size 10 6E and my feet cause the material to spill out a tiny bit over the outsole. The insole is 10.5cm at its widest and the outsole is 12.5, so not really sure why it's labelled 6E, given the chart you linked.

 

Hi Mt,
One of your feet in one image is 11.2 cm. That foot is actually in the middle of the EEEE range. The other foot is EE. One of your feet is right on the line of US snowboard boot sizes 6.5 and 7. The other is in the middle of the range for size 8 US in snowboard boots. This is a very tricky fit in a single boot size. The safety fit would be a size 8.5 in these wide Burton boots. Your larger foot is an EEE width at that size. The problem will be that size 8.5 will be two almost two full sizes too large for your smaller foot. The other option will be to go down to the size 8 with the understanding that you will need to do some work on the width. The best option would be a pair of size 7 and a pair of size 8.5 but I understand that this is often not possible.

STOKED!