Define streetable...LOL.

Legally, no, not streetable.

Do I drive it on the street, once in a while I'll drive it 20 minutes to the shop if I don't feel like trailering her up. I do the speed limit on those rare occasions I drive her to the shop as I do not want to get stopped for ANY reason.

I can think of about 20 things a LEO could write me up for.

Very rarely is it on the street outside my neighborhood.

It's an amazing track car. You will love yours...

 

The one time I tracked it so far, it felt like my 986S on steroids. The best part is it has a Burmeister sound system, something every track car needs. LOL

 

Before this car, i drove a track prepped E36 on R7s and occasionally R1Ss. Proper R comps definitely like a little less pressure. 32-33 is what I ran 'em at. 30psi hot sounds quite low for a street tire, though. I'd have to start out cold at such a low temp the tires would be flopping on the rims and it'd take half the session to get good. But maybe its not so bad. I'll def explore some lower pressures until i find where they fall off again. It helps that i'm on wide wheels for the tires so they'll have a lot of support. 9/10" wheels with 235/265 tires.

 

29-30 hot on the Hoosiers.

30-31 hot on the R888R’s.

These are my hot temps that give me max grip.

YMMV

 

That’s the exact info for Hoosiers I was given by some track savvy drivers and it has proven to be a good pressure for me. It’s pretty cool how I may not be the best driver out there, but having done the hobby now for 10+ years, I can tell when the pressure goes up only a few psi above that ideal range.

 

If I get 1.5-2 psi hotter than those numbers, I'm sliding around. It's a fine line...

 

Interestingly, everything I have read indicates Hoosiers engineers are adamant that hot pressures should be 40 psi. I personally like 32-34 hot.

 

40 psi I'd have no control of the car.

32-34 psi gets dicey for me.

I'm also not a great driver.

Different strokes I guess...

 

Over the years my take from Hoosier is their pressures are based on longevity as lower pressures, especially when cold, have caused issues with tire failures. Running TT I start at 28psi and figure the 1st 2 laps are it then it’s come on in.

Peter

 

Hankook Z214 c51 r-comps: used to run them at 30 to 32 psi hot because that's what I read online that R-comps like Hoosiers should be run at. It's also what Hankook's own racing tire literature states as the target hot pressure. I was cording inside edges of all 4 corners within 10 heat cycles like clockwork at those pressures. 2006 Cayman GTB1 under 2800lbs with me in it.

Then I spoke with Danny von Dongen @ Hankook Motorsport. That's when I found out that the 30-32 psi hot target is for their F200 full slick, not the Z214 C51. Based on my photos he was certain I was collapsing the center of the tire due to too low tire pressure and said he recommends to everyone to target 36-38 psi hot on the Z214 C51. So that's what I ran for my next sets. While the car felt like it had less grip, my data confirmed I still had all my peak lateral grip level, and my lap times DROPPED, and I got 18 HC's out of each set - setting a PB within a few tenths of Mosport's GTB1 track record (which was set on Pirelli slicks) on the 18th & final cycle, with the insides just beginning to cord when I get back to the paddock.

 

And found a low mileage, well cared for 2015 Cayman GTS. It replaced my 2004 GT3....no regrets. Still learning to drive the car, my first PDK. All I can say is that in my hands, at Laguna Seca, I turned a 1:44.83 in the GT3....the Cayman GTS came up with nearly identical times....how can that be with 45 fewer horses and a nearly stock suspension? My short answer, mid-engine, and the PDK in Sport + mode.

I confess the following has been done to the car:

• Front brakes from a 991 911S (Direct bolt in),
• GTS front lower control arms for a wee bit more camber
• Tarett Engineering rear adjustable toe links

That's it...nothing else is planned in the way of mods...diminishing returns, a concept to consider when adding "upgrades".

 

11 years newer technology. Plus mid engine is easier to drive at the limit for us hobby drivers. General statement based on my experience. Not everyone will agree.

 

I was not as lucky as you Martin. My 15 GTS had higher mileage and wasn’t taken care of as well as I would but it’s still great and I love it on the track. Can I ask what tires you run?

 

Bridgestone RE- 71R, DOT 200
255/40/19 Front
285/40/19 Rear

At 30 heat cycles, no significant wear. A pal is looking at Goodyear Eagle F1 tires, they look interesting, but I ain’t switching.

 

That's a bit odd. RE71Rs are known for wearing very fast. I only have three sessions on mine and they look more worn than i'd expect. And i'm used to running Hoosiers. hah

Eagle F1s are big downgrade from RE71Rs in terms of grip/speed.