Timing matters, of course, but it also depends on the reason for the transfer or sale of the item and what you did w/the proceeds.
For instance, if you transfer the title to your paid-off Mercedes to a family member and then file for BK protection shortly thereafter, that could be considered fraud. The reason behind that is that if you have something that's worth that much, you could sell it and pay off your creditors -- or at least make a huge dent. There's no reason for your creditors to get screwed when you could handle the financial situation with your own devices.
On the other hand, if you got married and put your wife's name on the house before the BK, that probably would pass muster.
Or if you cashed in a cash-value life insurance policy and used the proceeds for your child's college, that probably would pass muster also.
I wouldn't do any of that the week before you file, but if you let at least six months or more pass, it looks less suspicious to the trustee, whose job it is to find assets to distribute to your creditors.
Hope this information helps.