I have converted all my old wheels to stamps. Even though the wheels have retired from the SU catty there are some that I can't part with. I make cards to sell so retired products are fine to use.
If you're interested in doing this to your retired wheels it's vey simple.
Carefully cut the stamp off the wheel at the join with a crafte knife. You need the cling mount foam for the catalogue to mount your new wheel/border stamp. Cut the foam using a craft knife.
Ink up the wheel stamp with black Stazon ink. Peel off the paper on the non sticky side and stamp the image to the cling foam. Remove the paper off the sticky side and attach the stamp, making sure that you mount it the same way up as the stamped image.
You can store up to 10 jumbo wheel stamps and up to 15 standard wheel stamps in a wood mount case.
I love how successful this turned out.