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Slicks

PhilRS

PhilRS

New member
Which one should I buy for a 993 CUP? I am driving only at Spa, between April and September.
 
I don't have my Cup any more but I've had my Cup and RSR on Michelin and Dunlops and the Michelin ones were v good. The Michelins were supplied by Protyre and from memory were 245 and 280/285, I've prob got the invoices somewhere and can let you know if needed but protyre will know.

As regards your other posting about setup, Richard Chamberlain at CTR Developments ran both cars. The Cup car won all its races so it wasn't a bad setup!

Hope that helps.
 
Phil, if I were going for an ultimate lap time I'd go for Michelins. The Dunlops are slower but more consistant and last longer so for a track day environment I'd go for Dunlops as they will be cost effective. I'm running my 993 on Dunlops. I don't know how quick you are Phil but if you are driving the car at 9-10/10ths you will need a geo to suit the tyre as the dunlop does not like a lot of camber. They were the control tyre for GT cup when I did a few rounds in 08 we had terrible problems with left rear blowouts. One cost me an outright win. It turned out that you cannot run a lot of camber on the Dunlop. We wound the camber off for the Brands round and didnt have a problem. In terms of pace, I got outright Pole in GT cup at snetterton on dunlops with a 1.10.8. Raced there the next week in Carera cup and was second on the grid with a 1.09.7 but was baulked badly on my flyer. Motecd showed an optimum of 1.09.3 so about 1.5 seconds a lap difference between the tyres but the Michelins go off after about 40 minutes whereas the Dunlops are fine for about 2 hours.
 
Hi Steve, it also may be that the slicks used are Cup type and not the Michelin SC compound which is more durable as we ran 2 to 3 races on them in the 993 , maybe with a pace compromise. You can also maybe use , good used slicks as it is for track day use which is what I did years ago on my 64RS.
But Paul would know.
 
Phil I'd agree with Steve that there's probably 1 to 1.5 secs a lap difference between the Michelin and the Dunlops when fresh on a 911. As Steve suggests the Michelin's drop off their initial higher grip pretty much after 40 to 50 minutes of continuous use or 2 shorter heat cycles. i.e. they work great for 2 sprint races. After that they drop off, but are fine for pounding around on for trackday sessions.

As a guide I've used both Dunlops and Michelin's on track days and would say you can get an absolute maximum of 4 hours out of the rears and 6 hours out of the fronts of either make.

As Hunter suggests there are different compounds available. My experience described above is with the C and D compound with regards to the Michelin. Steve's comments will be related to the G compound which the GT3 Cups run and is softer / stickier so not sure how long they will go. I've never run them as they don't make the right size for my GT2. They were developed specifically for the GT3 Cup 30 minute sprint races.
 
Thanks all for input. Looks like there is convergence on the Dunlop as slick of choice for trackdays.
 
I do a whole track day season on Dunlop slicks -although they are mighty sh@gged by the end.

They seem a lot more progressive than the Pirellis I used before and can even slide them around a bit -the P Zero slicks were like being on rails; timewise may have been quicker but not so much fun......[;)]
 
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