Reasons for possible changing wheel sizes are that whilst 16inch tyres are easy to get in UK, ( Vintage Tyres Supplies highly recommended), in South Australia, the nearest source is 500 miles away. Having had a string of punctures, I was carrying a new tyre, as well as a spare. Ended up using the spare new tyre when blowout occurred. Travelling without spare for long distances is a worry!
Also, if I get the electric power steering fitted, as I hope to soon, I can use a wider section which is more readily available in 15 inch here. There are web sites with all tyre diameter, so as to find a 15 inch diameter very close to a 16inch etc.
I tried an 80's XJ6 wheel and the PCD is bigger than the 409, as a later post stated. Parts book show 409 and 410 hubs different. 409 is more like 115PCD from a rough measurement.
Philip's suggestion of banding looks possibly the best way - keeps the car looking original.The historic rego scheme here stipulates that the car must be kept original, so that is another thing to consider.
Thanks for all the information
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