Keep in mind I use DOT race rubber;

Currently running Hoosier Vintage TD's 185 60D-13 these are bias ply but smaller circumference so they help the gearing.

I was using Yokohama Advan A048s, before that it was A008s (these were SCCA Spec Racer Ford control tires) Toyo and Hoosier also make em in this size.

I buy the tires used from John Berget racing tires (on the net) about $55-65 each shipped. Depending on how much driving you do they could work, being so soft they wear quickly but you could probably manage 5K out of them...........I get 600 race miles, main reason I change them is they've gone off not because they are worn. For street driving this likely wouldn't be an issue.

Tom