Its funny my books tell me that OE on a Toledo was 520X13. same as a Herald or an 1300 Spitfire.
The accepted standard radial alternative to a cross ply tyre of the 520 section is 145. so the recommended radial fitment by all the tyre manufacturers as far as i can see for a 1300 Spitfire or a Herald is a 145R13. which is good news as at last one of the major tyre manufacturers has made a proper classic tyre in the size 145R13 https://www.longstonetyres.co.uk/pirell ... -ca67.html
and they are a sensible price.
However what seems a little strange is that these same fitment guides that say 145R13 for the Spitty and Herald (and lots of other cars that fitted 520X13) seem to list a 155R13 for the Toledo. I wonder why.
For those of you that want a 175/70R13 this https://www.longstonetyres.co.uk/pirell ... -cn36.html
is miles better than anything else. and they were OE on the Dolomite Sprint