If you have the spline drive wire wheels on Your MG, and tried to have them balanced, you haven’t able to find anyone who can balance them properly. You will need a balancing adapter nut, with this tool you can go to ANY modern tire store, and have your Wire Wheels balanced properly. That means you don't have to spend time to look for a British car or Wire Wheel shop that may be very far away from where you live. We at Maxco Engineering produce this balancing adapter nut. For more info Email us at Maxco@verizon.net or Call (863) 647-9414
For pictures and How to use this rim balancing nut click this link. http://forums.aaca.org/f168/adapter-nut-balancing-mg-wire-wheels-349197.html
