Hi: A 3.5 inch rim with 145 width tyre does not fit under the boot floor of my Countryman. The original tyre size was 5.20, which I am guessing is an imperial size and narrower than 145?? Is my guess correct, and if so any idea where I can get a 10 inch by 5.20 tyre?
Thank you.

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1965 Austin Cooper 998 (UK built)
1963 Austin Countryman woodie

5.20x10 was a cross ply tyre, not a radial ply. 145-10 was the radial replacement, first fitted as standard on the Cooper S.
I doubt 5.20x10 tyres are still made, and their handling was poor compared to radials.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Hmmmmm

http://honeyfieldtrailers.co.uk/520x10-wheel-and-tyre

http://www.ebay.co.uk/itm/5-20-10-520-1 ... 0584499302

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"Show me the Mini!"