991 RS Tire choices
 

So, what are we running?

Sizing Diameter - Width -Revs - Load
Michelin/Dunlop
OEM rear 325/30/21 - 28.7 -13 - 725 - 2194
OEM front 265/35/19 -27.3 -10.7 -761 -1709
And now R making them about +/- 2 seconds per mile of track faster but $3500......

Hoosier DOT slicks
R7 345/30/19 - 26.8 -14.1 -775 -1635
R7 295/30/19 - 26.1 -11.5 -796 -1279

Hankook slicks
F200 320-710-19 - 27.8 -13.6 -779 - no load rating avail?
F200 250-650-19 - 25.5 - 10.4 - 816 - no load rating avail?

Pirelli takeoff
Sizes no longer listed on Pirelli website, so I cant find actual dimensions
I think they have better suited sizes but its Italian, so you can’t find anything.
HD Ferrari 315-710-19
HD Ferrari 275-675-19

Other brand slicks that fit 19"?
Other brand DOT slicks that fit 19"?

I'm trying out the 21"/20" MPSC2 R this year for ****s and giggles and because I like to burn money at both ends. :D

I used Hankook c51 slicks years ago on an Evo and they worked very well, would love to know more about the Hankooks you mention especially compared to Hoosier 295/345 on a 19" rim.

I hear the Perellis are quite a bit more than the Hoosiers.

I'm currently considering a 19"F and 20" R for RS to try to maintain some of the OEM rake.
Thoughts on:

Hoosier 295/30/19 (26.1 dia/796 rev) and 335/25/20 (27.1 dia/767 rev)
or
Toyo R-888R (different from the R-888!)
295/30/19 (25.96" dia) and 325/30/20 (27.68" dia)

I like the OEM size Trofeo R's

C51 tires were more of a DOT tire than a Non-DOT slick. They compare in grip to the Hoosier R7.

The F200 Hankook slick is a totally different tire. Non-DOT tire. It is very similar to the Pirelli Ferrari takeoffs with pretty decent wear over the life of the tire. They will heat cycle out before they get down to the wear indicators or show cords. Grip is pretty decent but not as good as the Pirelli when new. From new to 3 heat cycles in they are about 2 seconds a lap slower but consistent. For the money new they are a decent option for a non-DOT slick. This information is from running the tires in the Creventic series last year on an Audi RS3 TCR car and BMW M235i Racing.

Thanks Seth!
The best set of Pirelli HD take-offs were 0.5sec faster then new R7's but only one session, after that I think they are about the same on the way to no more grip after 2/3/4 sessions and then they fall off harder then a R7.
After 4 sessions the car isn't drivable losing probably 2-3 seconds a lap over a corded R7.
They are quite hard for a slick I suppose as opposed the Michelin superglue stuff..

The most I got out of the used Pirelli's is 8 sessions, but the last 4 they are quite a bit slower then R7.
All in all you can run two days on a set of $600 Pirelli's VS 3 days on a Hoosier.

What other brands make 19" slicks that fit, anyone know? Hankook comes close but not nearly as wide as fit.

You can try Michelin Slicks. They're a little pricy and don't last long but sticky AF

Yes that is the problem with any used takeoff tire you buy. You really don't know what kind of tire you are getting and the length of time on them. The Pirelli slicks will fall off a cliff grip wise when they heat cycle out no matter what the tread depth indicator says on the tire. When buying them what you don't know is if the 1 heat cycle set has a qualifying heat cycle or a 1-hour practice session heat cycle on them. The 1-hour session would mean the grip will fall off a lot quicker than the qualifying set. The price point is hard to beat at $600 for a set of the used slicks.

The Michelins will be a grippier tire but they will heat cycle out just like the Pirellis but it is hard to find a used set of Michelins for the GT3 or GT3 RS.

I am always leery about buying a used set of racing tires for the reasons above. The price point is good but without knowing the history of the tires it is hard to know what you are getting. For the DE environment they usually do work great because most guys aren't trying to set lap records or trying to be competitive in a racing environment with these tires. That is why they are cheap. But they also might not last as long as a set of new tires so the savings might not be as big of a quantity as you think if you are going 2 days on the slicks but 8 days on the Hoosiers. Another thing to be careful about with used takeoffs. Be easy on then on the first few laps and let them get up to temp and up to pressure. Since you don't know the history of the used slicks you also don't know how the person who originally drove on them treated the tires when cold. If they slid them around and hopped curbs with the tires then they won't last long and the chances of a delamination are increased. And the savings of the tires can really be wasted if this were to happen at Daytona on the bankings.