Originally Posted by Chris Rimby
I was just about to order but all this sizing madness has me reconsidering. I wear a 9.5D in an AE Byron. This shoe just barely fits though. It's almost too short for me. I guess maybe try a 9G in RM Williams?
The reason the AE is so snug is because they run quite narrow compared to RMW boots. Again, the softer more compliant leather of the RMW makes them feel roomier. I too find a 8D in lasts other than the AE Nr 5 feel
almost too short and really snug - just like you. If I then compare an RMW 7G with it, I find it feels
longer and wider even though the measurements tell me that AEs are longer. I can only explain this by saying the RMW leathers are softer and thinner plus the extra width stops the toe box from getting cramp - giving the illusion of being longer. I strongly suggest that you go for an RMW 9F if you are going for size 9s. It will still be considerably
roomier than a 9.5D in the Byron because it will be a lot wider. I am very seriously beginning to think that the best recommendation is RMW 8F for someone who wears AE Byrons in 9D - especially when you order in veal calf or kangaroo. I will rewrite my sizing recommendations to make it simpler - when I have time. At the moment it looks like madness - sorry. Though as you can see, the basic recommendation of AE size minus one basically works for most people anyway. I just want to tweek things to get it even more precise.