I use the Spec racer 185/60/13 for schools and rain. They were faster at Pocono and Daytona, than the 205 /60/13s. Most of the time they are 2-3sec slower than the bigger tires, like at Watkins Glen.
FWIW the 205s set a lap record at Sebring. 244.3 or so, the 185s went about 2:48.
The car needs a different setup and the overall IPR( or inches per revolution) is a lot less, along with the rubber drag. Top speed is alot higher, 6-10 mph in a A1 Rocco, thus the results at Pocono and Daytona. We could pretty much hang onto a draft of a faster group.
The 185 will not last very long at racing speeds or if overdriven. The Victo racers will get very greasy if slid, at all. If they are 40 or 50 $ and you have 2 schools to do , than they will be a good deal, IMHO. You will get passed inthe turns, from the center out.
FWIW the car was/is fastest on very light 205 /55/13s than the any 14in tires.
185/60/14 = Miata
Mike Ogren
Mistake,, Your IPR will be big, withthe 185/60/14 tires. My IPR withthe 13s was smaller and could compete withe the larger tires due to overall gear and less drag.
MM