GT3-FL

Hello. I am currently running Hoosier 295F and 345R on my .2 GT3 RS. I have 19x10 wheels in the front and 19x12.5 in the rear. The car tracks great and no issues with TC or ESC. I am looking at trying Hankooks but not sure about the size for the front. There is a 250/650R19 and a 300/680R19. I would rather go with the 300 but Hankook recommends a minimum 11” wide wheel. This weekend at Sebring, I saw a 992 GT3 running Hankooks and it had a 300/680R19 up front. I could not find the owner but I am pretty the front wheel was not 11” wide.

I know that the 992 suspension is different so does anyone have experience with the Hankooks on a 991.2 RS?

thanks.

SmokinGTS

I tried two sets of Hankook slicks on my Clubsport and really didn't care for them other then the price was good. These tires just didn't have the grip of a Pirelli and even better a Michelin. The Pirelli had the best all around performance for grip and longevity.

TRACKD

Yes, 300 will fit on the front with a 10” front wheel. However, you must realign the car as the tire is much taller (since it’s supposed to be a rear tire). I have seen Hankooks run on 991.1 and 991.2 RS. And they definitely have more grip than a Hoosier. 8 really good heat cycles, by 12, you’ll be begging for stickers if you are really pushing the tire.

GT3-FL

Thank you.

CRex

It's not helpful to talk about slicks without being sure you have the right geometry, temps and pressure for that compound.

I've driven literally 50+ sets of Hankooks in the last 5 years alone. Raced them across many car formats: TCRs, mid/front engined GT4s, front/mid/rear engined GT3s, on the C51/52/53 compounds. They're one of the best value for money out there.

These things generally have a very narrow peak window and then comes down to a rather flattish plateau for the rest of its life. Overall longevity is really quite good. Key thing to know is that they need care when cold--they get grained (i.e. damaged) if you scrub them hard before the tread comes up to operating temp. They have a stiff construction and sidewall--makes it a predictable tire vs. a Pirelli, especially for track day drivers looking to build skills on a consistent platform.

Why did I waste everyone's time with all these details? I just want to highlight the many, many variables needed to get slicks to operate "in the window". Those variables are impossible to ace without real professional support. By professional, this is at least one engineer with knowledge and access to tire temps, telemetry data and car-specific expertise. This is wholly impractical in a track day context.

My practical advice is, just go with a tire size that fits your car. No need to go for the widest--you're looking for the one closest even slightly smaller than OEM road specs. Ignore the noise that "X tire is better than Y" (even if that may be true). Focus on getting a good tire on a platform that you can consistently build on. Everything else is just theoretical.

You can get the complete tire size details on any manufacturer's website. Hankook's spec sheet is here:
https://cdn.shopify.com/s/files/1/05...1258226content

p.s. in case I came across as axed on Hankooks, it'd help to know that I've driven more Michelins and Pirellis than Hankooks. There are better tires sure, but my point is don't get fixated on getting the "best" tire for a street car being used for track day. It's all false precision.