Experiment - GT4 Track Setup Wiki:
05-11-2016, 12:09 AM
#61
Rennlist Member
Iron rotors for PCCB equipped cars are available from Racing Brake.
http://www.racingbrake.com/RB-Iron-R...por-irk-13.htm
http://www.racingbrake.com/RB-Iron-R...por-irk-13.htm
05-11-2016, 12:27 AM
#62
Drifting
Iron rotors for PCCB equipped cars are available from Racing Brake.
http://www.racingbrake.com/RB-Iron-R...por-irk-13.htm
http://www.racingbrake.com/RB-Iron-R...por-irk-13.htm
05-11-2016, 04:48 AM
#63
Addict & Guru
Rennlist Member
Rennlist Member
Originally Posted by brel
I have 19x11 OZ Legerra HLT with 285/35 RE-71R's on my car. I used 5mm Porsche spacers to get 45mm effective offset to clear OEM links.
05-11-2016, 08:34 AM
#64
05-11-2016, 08:37 AM
#65
Burning Brakes
https://rennlist.com/forums/991-gt3-...j-hooks-2.html
19x11" ET 50 is available from Tirerack. You have to call someone(I suggest Damon) or use the a '16 Carrera 4S in order to be able to put the wheel in your cart. HTH
05-11-2016, 10:54 AM
#66
Drifting
Those rotors are garbage. Please do your research before you put these on your GT4 (or any car for that matter)! There is a thread here that will get you started:
https://rennlist.com/forums/991-gt3-...j-hooks-2.html
https://rennlist.com/forums/991-gt3-...j-hooks-2.html
05-11-2016, 11:10 AM
#67
Yikes! Well I wouldn't have been buying them anyway since I have the regular brakes and have already bought a pair of the APs to install later. I hope for the sake of the people who bought them due to lack of any other option that their brake lines are better engineered!
05-11-2016, 12:00 PM
#68
Addict & Guru
Rennlist Member
Rennlist Member
Originally Posted by ExMB
Tirerack doesn't show that option for a GT4. But if you select 2012 C4S you will see that width and offset option.
05-11-2016, 03:25 PM
#69
Rennlist Member
As ExMB mentioned, you need to select 2012 911 4S to see them. Here is the direct link to TireRack. Scroll down to see specs.
05-11-2016, 08:09 PM
#70
This is a fantastic thread and one I am sure to revisit as I prepare for my first event at road America
Have you assembled any pricing associated with the various recommendations? Maybe a spreadsheet? I'd be very curious what the potential cost is to do everything as suggested
Have you assembled any pricing associated with the various recommendations? Maybe a spreadsheet? I'd be very curious what the potential cost is to do everything as suggested
05-28-2016, 01:05 PM
#71
Bringing this back to the surface.
Quick update on alignment. I went down the path of upping my camber to -3.5F a couple months ago. I acheived this using camber plates, and in fact, the camber plates on their own are good for -3. Tire wear improved a bit - however mid corner grip was reduced. Turns out that camber plates (from Tarret) rotate the strut forward a bit which has the effect of reducing caster. My caster went from 9.2 with -3 camber, to 7 with -3.5. This is with the wheel perfectly centered in the wheel well to reduce any rubbing from the aggressive 265 tire package.
Went back to soulspeed to see what we could do to bring some caster back. Collin backed off the camber plates to their minimum position, and used shims to get the rest of the negative camber. He was able to get 8 degrees. I'll run this at COTA with BMW in june. The next option is to remove the camber plates, and get the inner, lower control arm monoball links that have the longer studs/extended interface with shims already part of the design. I doubt that would give any more than half a degree of caster, so I probably won't go this route.
It's all a dance....
Quick update on alignment. I went down the path of upping my camber to -3.5F a couple months ago. I acheived this using camber plates, and in fact, the camber plates on their own are good for -3. Tire wear improved a bit - however mid corner grip was reduced. Turns out that camber plates (from Tarret) rotate the strut forward a bit which has the effect of reducing caster. My caster went from 9.2 with -3 camber, to 7 with -3.5. This is with the wheel perfectly centered in the wheel well to reduce any rubbing from the aggressive 265 tire package.
Went back to soulspeed to see what we could do to bring some caster back. Collin backed off the camber plates to their minimum position, and used shims to get the rest of the negative camber. He was able to get 8 degrees. I'll run this at COTA with BMW in june. The next option is to remove the camber plates, and get the inner, lower control arm monoball links that have the longer studs/extended interface with shims already part of the design. I doubt that would give any more than half a degree of caster, so I probably won't go this route.
It's all a dance....
05-31-2016, 01:05 PM
#72
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Bringing this back to the surface.
Quick update on alignment. I went down the path of upping my camber to -3.5F a couple months ago. I acheived this using camber plates, and in fact, the camber plates on their own are good for -3. Tire wear improved a bit - however mid corner grip was reduced. Turns out that camber plates (from Tarret) rotate the strut forward a bit which has the effect of reducing caster. My caster went from 9.2 with -3 camber, to 7 with -3.5. This is with the wheel perfectly centered in the wheel well to reduce any rubbing from the aggressive 265 tire package.
Went back to soulspeed to see what we could do to bring some caster back. Collin backed off the camber plates to their minimum position, and used shims to get the rest of the negative camber. He was able to get 8 degrees. I'll run this at COTA with BMW in june. The next option is to remove the camber plates, and get the inner, lower control arm monoball links that have the longer studs/extended interface with shims already part of the design. I doubt that would give any more than half a degree of caster, so I probably won't go this route.
It's all a dance....
Quick update on alignment. I went down the path of upping my camber to -3.5F a couple months ago. I acheived this using camber plates, and in fact, the camber plates on their own are good for -3. Tire wear improved a bit - however mid corner grip was reduced. Turns out that camber plates (from Tarret) rotate the strut forward a bit which has the effect of reducing caster. My caster went from 9.2 with -3 camber, to 7 with -3.5. This is with the wheel perfectly centered in the wheel well to reduce any rubbing from the aggressive 265 tire package.
Went back to soulspeed to see what we could do to bring some caster back. Collin backed off the camber plates to their minimum position, and used shims to get the rest of the negative camber. He was able to get 8 degrees. I'll run this at COTA with BMW in june. The next option is to remove the camber plates, and get the inner, lower control arm monoball links that have the longer studs/extended interface with shims already part of the design. I doubt that would give any more than half a degree of caster, so I probably won't go this route.
It's all a dance....
05-31-2016, 01:35 PM
#73
good to know. Interesting new "twist" with the camber plates. I guess the fact that Shake is running 265 R7's vs the 245 RE71R's leaves a bit less space to push caster out before rubbing. I wish we had 245 or 255 R7's available.
05-31-2016, 01:57 PM
#74
I did an alignment yesterday. Got right where I wanted but caster was a bit high. Completely stock with shims up front and no toe. I was in the mid 9s to upper 9s with 2.0 on each side. Will see if any rubbing occurs.
05-31-2016, 02:31 PM
#75
