jo_ker

excuse me for the error. thank you for correction Manifold.

ESP / DSC / PSM,...

wtdoom

No offence to some of the posters but if you can't drive a car without pasm then you have no need of driving on slicks etc . Walk before you can run

Nick Yoskin

A



Agreed 100%. Seen so many "hi rollers" at the track with nothing but the best equipment when they should honing their driving skills more then stroking checks.

C.J. Ichiban

Agree with you and Wtdoom.

Driving/ racing school is a much better investment for 80% of the track day crowd vs mods

hughp3

yeah hard not to agree with the above. I had Leh Keen take my former GT3 for timed laps at AMP, completely stock including alignment. He was 5 seconds faster than me. Almost beat his one-lap winning GTR time and that car was full on modified. Not the car.. or tires. Kinda like golf clubs never helped my game but made me feel better

kiku

Try the Hoosier R7s. Have them on my audi and its night and day difference from MPSS or MPSC. You have to keep the Super Sports/Cup tires well below 130 degree internal temp otherwise they will get buttery on you. Hoosier R7s were very consistent, yet tolerant to more agressive driving. Turn in was very very good. Note, though, R7s run larger (wider) than same size Michelins.

Zulu Alpha

Exactly. Master the car, before mastering the tire.

Joe731

I would like to put R7s on my RS because they are significantly faster around the track than street tires and the car will be faster, and in my view more fun to drive than street tires. I would also like to leave PSM on, not because I intend to drive recklessly and have PSM save my a$$, but because PSM can do things that I cannot, and that no one else here can do either. Like brake one wheel at a time to regain some level of control when you enter a turn just after someone dumps antifreeze all over the track.

There are posers who drive past their ability and are saved by PSM several times a lap. We have all seen them and try to put distance between ourselves and them as quickly as possible, even pitting in if need be, but wanting to leave PSM for those extraordinary times when the track presents surfaces that do not allow you to maintain control with 4 wheel braking is a good thing, and a smart thing, not something that says you are not a good driver.

If you have it, and it is modern and non-interfering, why wouldn't you leave it on? Please don't say bravado.

TRAKCAR

I've never turned it off because it simply doesn't come on when you are getting maximum speed out of the car.

With the 997's I rarely left it on because it interfeared, slowing down lap times at most tracks.

The 991 need less rotational trail brake due to RWS but mostly the system got better and less intrusive, specially in Sport +. If it wasn't for that is never use Sport +.

Bob Rouleau

Thanks guys for hijacking my thread. This isn't about PASM which by the way is SUSPENSION Management, nor PSM which is stability control. I was the CI of our region for 15 years, ex pro racer etc.

Driven properly the new RS overheats its Michelin Cup 2 tires in 4 laps. Like my previous RS it really wants race tires. The issue is whether 19 inch wheels will fit and if so whether 19 inch slicks will have the right rolling diameter to avoid causing the ABS to freak out. By now I hoped someone would have found a solution.

Regards,

NateOZ

My RS still hasn't arrived, as I posted earlier, I would try the Pirellis.

325/30-21 = 755mm diameter, 325/725-19 should work for the ABS

265/35-20 = 670mm diameter you could try 255/650-19 or 295/680-19
s in the car. I would go the 255/650s if it was me.

Keith Verges - Dallas

I don't know why faster is considered automatically "more fun." It may allow you to "win" a DE by passing more cars and keeping others behind you, but less grip is plenty fun, and if it comes with more durability is not a bad choice for DE. Also, some tread can allow wet driving, which won't work with slicks or R7s. Driving in the wet is an absolute blast and almost "free" due to greatly decreased use of consumables. Finally, slicks void your warranty if I understand correctly and that's a significant risk, unless you are a fraudulator type to put stock wheels and tires back on after something like a bearing failure and play ignorant.

I had wanted to put 19s and stickier tires on my GT3 and then thought better of it. It's far less risky to just get in my SRF3 and Hoosiers and run similar times on non-power tracks and race to boot if my objective is maximum grip and pace and "winning." And then there is the ACR (comes with a more sensible 19" wheel set). But that's a different topic.

YourFace

Driven properly the new RS overheats its Michelin Cup 2 tires in 4 laps.

Go Nitrogen Filled?

Joe731

Sorry to high jack this thread. Fair point. Let's get back to wheel/tire options for the GT3/RS

Hoopumpers

Bob, as previously mentioned, GMG has run 19" wheels (replaced stock PCCB with Brembo small brake kit), with 19" Hoosier R7 (I realize not race slick) and had no issues with rolling diameter and ABS. Nannies off. Call James if you want more details on their experience.