The Hutchinson beadlock part number is B3040 for 16r20 tires... they are the metal strip with rubber on both edges...The Hutchinson part number for 14r20 tires is: D4539-3 ...It is common for a 16" tire to be mounted with a 14" beadlock but it is WAY tight and is a lot of stress on the lugs and nuts...mostly because most guys do not realize the 16s have a thicker bead and there are different beadlocks...the beadlock for a 16 is 7.25 wide, and a beadlock for a 14 is 8 inches wide...that 3/4 inch has to be compressed and go somewhere...it usually causes the rubber beadlock to bunch up in the middle...not great but it is better than it would be if a narrow 16" beadlock was mounted in a 14" tire since it would not reach the tires bead on both sides and would be flopping around possibly damaging the beadwall from the inside, causing vibrations and eventually breaking apart since it's sheet metal... The Cage Code 62161 many mistake for the part number is the Code for the Manufacturer: HUTCHINSON, not the part number. That's why it's listed on both size beadlocks...
see pics for illustration... I updated this old thread in case someone is looking for information...
METAL 16" BEADLOCK -----------------16" PART NUMBER -------------RUBBER 14" BEADLOCK --------14" PART NUMBER