Any 21 inch rim would fit. The main question is one of practicality. We could not change wheels as Terry and I were both running KTM spec wheels despite the fact they were on BMWs. The wheels would not have fitted Steve's bike. The only solution was to pull the wheel apart to get a rim. We had planned to get in touch with off road bikers in Yakutsk and see if they had any rims they could sell Steve. Then we saw kudu with spare wheels. The simplest solution was to use one of those. Terry and I had to ride our bikes back from Moscow to western Europe in 4 weeks, just 1 week after the bikes were due to arrive. So there would be very little time to effect a solution. Terry and I were not waiting around in Moscow for the bikes - we were going to fly in and ride them out the next day. Also we both had top quality excel rims. There is no stock of those in Moscow to replace our rims with. It would potentially have been very expensive for Steve to arrange for an A60 rim to be imported to Moscow, pay import duty and then get it laced to my hub. The solution with kudu was the most logical on every count.