my problem is that i have a really wide foot. my foot in a normal position is 105 mm wide and when i lean forward it almost goes up to 109 mms. can i buy a boot thats less butt mold the liner? or is that impossible.
your problem will be solved by a bootfitter. they will be able to recommend a good boot for you as well as a good footbed. go in with an open mind about models and really listen to what they have to say.
your foot is expanding when you lean forward as a result of pronation so you will be need some sort of supportive footbed.
what size is your foot? when a manufacturer states a last width (ex 98,102,103,etc...) it's usually based on sample size which is mostly 26.5. from there the last gets wider as you go up.
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If you are a 28 and your foot measures 105mm when unweighted, you prob want to look for a boot with an advertised last of 100-102mm. In a 28 those will be 104-106mm. With a good custom footbed you should be abl to keep your foot from widening to much under load but it may also make it shorter which may mean you can go down to a 27 so you may want to look at 102-104 lasts. But the width of your forgot is only one factor and is usually the easiest part of the boot to expand. You want to look for a boot which fits your instep, heel and leg well and then look at making the forgot work. Overall no one here can really recommend anything as we can't see your exact foot and size, but hopefully this helps you some what.