I am sur ethis has been discussed before but still would be glad of you advice.

Seven SV  2002

Currently on Yokohama A021 185/60 R14 , there seems to be a dearth of replacement tyres on 14"

Therefore I am thinking to buy some 13" wheels for track days and road use can you please advise how to proceed on the necessary tyre size and to keep the same ride height, I am not necessarily looking for more grip

Gavin