Yokohama used to do the A005 full slick in 190/580/16 - comparable to 195/45/16 road tyres, BUT finding them is nigh on impossible!!! Demon Thieves list them but can never get hold of any, cos yoko are permanently out of uk stock.

16" track tyres are a right PITA to source, hence why a lot of people either size down to 15"s or up to 17"s