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Track wheel and tire setup?

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Old 05-01-2018, 10:58 PM
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electron mike
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Default Track wheel and tire setup?

Anybody running 19 inch RE71Rs on a 991.2 GTS for the track? 245/35/19 front and 305/30/19 are both about an inch less diameter than stock.

20 inch Michelin Cup2s in stock sizes are an option, but I prefer the RE71Rs myself.
Old 05-01-2018, 11:16 PM
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CarreraFahrer
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I don't have a GTS but I'm considering running the RE71R's on some 19" OZ wheels on my C2S. The lower CG and lower gearing should all be plusses on track. Not to mention the weight savings plus less expensive tires vs 20".

https://www.tirerack.com/wheels/WheelCloseUpServlet?target=runWheelSearch&initialPartNumber=W01962001BRG &wheelMake=O.Z.&wheelModel=Leggera+HLT&wheelFinish=Bright+Race+Grey&show Rear=yes&selectedRear=W01966002BRG&autoMake=Porsche&autoModel=911+Carrer a+S+Coupe&autoYear=2014&autoModClar=

Let's see some photos of your car at COTA.
Old 05-01-2018, 11:36 PM
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electron mike
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Originally Posted by CarreraFahrer
I don't have a GTS but I'm considering running the RE71R's on some 19" OZ wheels on my C2S. The lower CG and lower gearing should all be plusses on track. Not to mention the weight savings plus less expensive tires vs 20".

https://www.tirerack.com/wheels/Whee...4&autoModClar=

Let's see some photos of your car at COTA.
Your link didn't seem to work? What sizes fit the S? I ran 19 inch OZ's and RE71Rs on my GT4 and loved them, looking to do the same on the GTS.

I have a GTS order in, but a long wait until it arrives, so I am killing time looking for track wheels/tires, rotors, and pads.
Old 05-01-2018, 11:47 PM
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See if this link works for you. I believe they have the proper offsets for the WB cars. Good luck with the wait. Leggera HLT.

https://www.tirerack.com/wheels/results.jsp?autoMake=Porsche&autoModel=911+Carrera+S+Coupe&autoYear=2014 &autoModClar=&package=false
Old 05-02-2018, 10:12 AM
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electron mike
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Originally Posted by CarreraFahrer
See if this link works for you. I believe they have the proper offsets for the WB cars. Good luck with the wait. Leggera HLT.

https://www.tirerack.com/wheels/resu...&package=false
Ahh yes, that is what I ran on my GT4 as well. Hoping someone chimes in that has run RE71Rs. Maybe the GT3 boys have as well since the stock sizes are the same as the GTS.
Old 05-02-2018, 10:18 AM
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I asked Joe that question in the thread below. It’s towards the end of the thread. Bottom line is he likes the RE71R better than the SC2 on 19’s. TH is my home track and he puts down some very fast times for a street legal car. Watch his vids.

https://rennlist.com/forums/991-gt3-...d-journal.html
Old 05-02-2018, 05:00 PM
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electron mike
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Nice, he is running 255/305 19's on a GT3. That is even better! I'll try this setup on my GTS, although this time I may go with Forgeline wheels for more caliper clearance over the OZ wheels.
Old 05-02-2018, 06:10 PM
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The issue with 19s is with RWS on the S or GTS if you have that option.
I do and I am trying the Oz HLT 19s on my GTS.
I got the 11x19 ET 50 rears and that leaves only 3-4 mm of space between the bottom RWS knuckles and the rim ( mostly in a inside out manner).
The rim diameter is larger near the edge of the rim and tightens to a smaller diameter near where the knuckle is placed with the ET 40 setup)
No problems at Chuckwalla, but I did see some rubbing at AutoClub with its extended high G corners.
I am adding 7 mil spacers to fix this ( by pushing the rim and the diameter change outboard from the knuckle).
A better option would be to purchase the ET 40 rim instead of the ET50 rim I chose ( pushing you 10 further away) which aviods the spacer.

I do have 71Rs on these rims (245 & 305s), much cheaper tire choice than what you can get in 20s.
Old 05-03-2018, 12:07 AM
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electron mike
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Originally Posted by arter
The issue with 19s is with RWS on the S or GTS if you have that option.
I do and I am trying the Oz HLT 19s on my GTS.
I got the 11x19 ET 50 rears and that leaves only 3-4 mm of space between the bottom RWS knuckles and the rim ( mostly in a inside out manner).
The rim diameter is larger near the edge of the rim and tightens to a smaller diameter near where the knuckle is placed with the ET 40 setup)
No problems at Chuckwalla, but I did see some rubbing at AutoClub with its extended high G corners.
I am adding 7 mil spacers to fix this ( by pushing the rim and the diameter change outboard from the knuckle).
A better option would be to purchase the ET 40 rim instead of the ET50 rim I chose ( pushing you 10 further away) which aviods the spacer.

I do have 71Rs on these rims (245 & 305s), much cheaper tire choice than what you can get in 20s.
Thanks for the info! I skipped RWS so hopefully there will be more room back there. Any issues with nannies or ABS with the smaller diameter RE71Rs?
Old 05-03-2018, 12:50 AM
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Originally Posted by electron mike



Thanks for the info! I skipped RWS so hopefully there will be more room back there. Any issues with nannies or ABS with the smaller diameter RE71Rs?
Nope, as long as you keep the ratios within 3% or so of OEM you are good.
And if you turn the nannies off, you dont care at all
Old 05-03-2018, 10:23 PM
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I had a track event on 19's last weekend. I bought a set of wheels with 235/35/19's and 305/30/19 tires. The 235's are a bit smaller than 245's, but with my sport pasm, I found inclines incredibly difficult to maneuver - I was scraping. I also have an aerokit which might contribute to the problem. I liked the idea of the lower ride height on 19's but I'm wondering if it's going to be a problem... Anyone else have any experience with clearance on these tires (245 not 235)?
Old 05-04-2018, 01:37 AM
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Originally Posted by skru_fase
I had a track event on 19's last weekend. I bought a set of wheels with 235/35/19's and 305/30/19 tires. The 235's are a bit smaller than 245's, but with my sport pasm, I found inclines incredibly difficult to maneuver - I was scraping. I also have an aerokit which might contribute to the problem. I liked the idea of the lower ride height on 19's but I'm wondering if it's going to be a problem... Anyone else have any experience with clearance on these tires (245 not 235)?

Sorry, got the front end lift system just for problems like these.

With 19's you are running a 1/2 inch lower height..... so just put them on for track days...
Old 05-04-2018, 01:52 PM
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Old 05-04-2018, 09:10 PM
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Originally Posted by arter
Sorry, got the front end lift system just for problems like these.

With 19's you are running a 1/2 inch lower height..... so just put them on for track days...
Lift would be nice... Even just for track days it is a bit tight, especially with a bit of extra weight in the front (tools).
Old 05-04-2018, 10:28 PM
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electron mike
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Originally Posted by Boba_kz


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