gmgracing

Wanted to share an update on a very interesting build from one of our customers. This car will be dedicated to track use and with only parts complimenting the 991 platform.

This vehicle has been outfitted with the following:
-Brembo Endurance brake pads
-BBS motorsport wheels (19 inch)
-Racetech Seats (full containment)
-Schroth gt3 harnesses
-GMG LMS harness bar
-GMG super low seat base kit
-GMG track speed lowering/alignment

For all questions/inquiries please email, Dom@gmgracing.com

MayorAdamWest

Looks nice. No brake upgrades? That's a lot of "go fast" parts, and also hoosiers. If I were running hoosiers, I'd certainly be looking at the brakes as well. Does the lowering mean the 20's no longer fit?

sasportas

Any issues with the rear wheel inner barrel contacting the control arm or brake line?

gmgracing

The car has the Brembo Endurance pads and fluid ! i forgot to mention that.

The lowering does not affect fitment of the 20s. It is a 10mm drop followed by caster, camber and toe settings front and rear.

gmgracing

no issues. This is believed to be the only wheel that clears without issue.

drdonger

Looks awesome, great work!

Zulu Alpha

Not even to reverse the bolt connecting the lower control arm to the hub?

Mech33

Are these identical widths and offsets to the stock GT3 wheels?

mooty

are u ABSOLUTELY certain and you are the actual mechanic who put the wheel on the car?

i have that exact wheel, 4 sets.
the lower control arm bolt will not clear, needs flipped and shaved, and even then the clearance is 3mm or so.....

my 991 is iron brakes.

Spyerx

Ts20 is not an endurance pad. It's a mildly agressive street pad that can be used on track. For an intermediate driver they are probably not agressive enough on track. Re10 is the race technologies endurance pad and it's very good.

gmgracing

I spoke with the tech. He said the rear camber bolt was close, but not interfering. He shaved 3 threads off the bolt just to be safe.

mooty

^ sounds about right. no shave i got .75 mm clearance.
i used a jet nut and flipped it, shaved it, so better. but if you hit a curb HARD, it will scarp the barrel

gmgracing

correct sir. thread updated

stujelly

thats what the 997.1 cup did to my fronts.

I guess there was a bolt that had to be flipped but there had to have been an inch clearance. Crazy how much flex you can get out of a wheel

mlpor

With what I might ask, Tires? Front & Rear 19" sizes and brand? 235/40 or ???? 325/30x19 or ???

As for the "only" 19" rim, . . . . over steels, . . . not, I believe true. Forgeline is offering a 19" which may, kind'a clear even PCCB's, but it is a close call. FWIW, in my experience it wasn't the rear steering bolt/knuckle, but the (easy fix) rear brake hose bracket that might be the 1st clearance issue with a 19" barrel.