- Welcome to home of the Adapter Ring for 10 S.C. Wheels AIRCRAFT RESTORATIONS P.O. Box 224 Rancho Paradiso Avery, CA 95224-0224 (800) 304-7327 FAX: (209) 795-2407 ABOUT THE ADAPTER RING Since the 10 S.C. tire & tube is so expensive and most FBOs don't stock them on the shelves, I developed these adapter rings for the more readily-available 10X4 tire & tube. Click here for more information and ...www.russaircraft.com