There are different Dunlops. Which ones?
I seem to recall there being two types of Dunlops. One that is much harder and more durable than the other? Which one are we yacking about here? If we say, "use any one you like", then we get into trouble at some sanctioning bodies, but not others. Which one is it? 9092 or the 476? What do the Canadian guys want and the newer vintage clubs that allow CF's. There is in my opinion still more work to do on this one
Here is what I found at SASCO, although the text may be as old as ten years ago.
COMPOUNDS Compounds available for Dunlop vintage racing tires are the traditional 204 (hard) and 484 (somewhat softer). Generally heavier, more powerful cars use the harder compound for longer life, while lighter cars choose the softer 484 compound. FIA rules for pre-'66 cars require the 204 compound to reduce suspension load, as do the rules for the HMSA in the U.S. Dunlop Formula Ford tires come in the traditional 9092 spec compound (medium) and in the new softer 476 compound. The FFord 476 tire has been tested to be 1 to 1.5 seconds per lap faster than the 9092. Formula V tires also come in the 476 compound. Goodyear contemporary tires are available in a range of compounds as shown in the spec sheet. Please inquire as to recommendations.
FORMULA FORD
The Dunlop 135/545-13 and 165/580-13 CR82 tires in the 9092 compound have been the spec tires for Formula Ford racing in the UK. They are also the spec tire for Monoposto RacingÀs Formula Ford class again in 1997. These are excellent tires of modern construction and compound. They last very well with drivers getting a year of life. We recommend them for Formula Fords, Formula Juniors, sports racing cars and production cars where rules allow them. The SVRA allows the135/545-13 to be used in Group 1 and both tires to be used in Groups 2, 3, 5, 6, 7 and 8.