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      10-02-2020, 07:00 AM   #23
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Quote:
Originally Posted by 4play View Post
More front tire is never going to hurt on this car. I can't imagine only running 265 fronts on a "track setup".

You need a 285 or more in the front to really dial out understeer.
The best track mod I ever did to my car was fit the 305 fronts. Car felt so planted and it would keep turning no matter how much steering you gave it.
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      10-06-2020, 06:28 PM   #24
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Quote:
Originally Posted by erictrainer View Post
You want a wheel that's at least 10" wide in the front so you can properly support a 265 or 275 tire. Unless you have clearance issues with suspension there is no reason to go 9.5 in the front, which I don't believe is the case with stock GTSs.

If you are running stock height I'd highly recommend to put more rubber in the front...any Apex wheel with 10.5et22 will fit in the front at stock height...and then you can go as high as 305.

If you're keeping it streetable then I would say run 275 (which most 275 tires have a 10" tread width), in that case you can run the 10et25 setup Apex sells and have a properly supported tire.
Sorry guys for delayed response... Thank erictrainer,

So at this point, based on what I am seeing from what you are saying, correct me please if i am wrong

Front should could be 19x10 275s upfront to retain steering potential and street use. If I really want to push it, Stock Height on 19x10.5 could work with wider rubber, however i more likely will lose some steering and suspension travel/rubbing would be an issue during compression.

all that considered, I would still go with 19x11s in the rear or 18x11's if need be???? I know 18s are generally "cheaper".

I dont think the ECU would see a drastic difference with 19 front and 18 rears, perhaps JKAMPINGAFW could tell us if he has had any issues with bigger front tire, smaller rear in regards to ECU/DSC.
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      10-26-2020, 03:06 PM   #25
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I have the same question, looking for a dedicated wheel set to run Nitto NT-01.

Want to maximize tire width but do not want to modify the car in any other way, and will not be dropping the clips out to lower it.

I just sent an email to Apex racing with the same question, I'll post back if they respond.
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      10-26-2020, 04:50 PM   #26
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Just got this from Apex:

Front: 19x10" ET25 with 275/30-19 tires
Rear: 19x11" ET44 with 305/30-19 tires
Brake clearance: SB CCB
Available in SM-10 design only.
5mm front spacers may be required for certain aftermarket suspensions, see below.
Front 19x9.5" ET22 wheel can be used to avoid running spacers with certain aftermarket suspensions due to its superior inner clearance.
315/25-19 rear tires may also be used, but may require rolled rear fenders and/or negative camber.
Rear 295/30-19 tires can also be used.

With a 19x10" ET25 front and a 19x11" ET44 rear, you can run 275/30-19 front and 305/30-19 rear tires as a mostly direct fit on a stock car. Since the GTS utilizes a rebranded KW clubsport suspension, a 5mm front spacer will be required with the 19x10" ET25 wheels. If you are running an aggressive tire compound, such as the NT-01, this additional spacing may require some front negative camber to compensate. As an alternative, you can run the 19x9.5" ET22 up front, which will clear without a 5mm spacer or additional front negative camber. These 19" wheels will also have no problem clearing the larger CCB's if your GTS is equipped with them.

In a follow up email, they said that if I decided on the ET25 (25mm offset) front, With the required 5 mm spacer I might need to get some negative camber, so he was recommending the 19x9.5 ET22 with 275/30 for a completely stock compatible set up.

They offer a mounting and balancing, so I'm thinking Nitto NT-01.

I just sent them another email about the possibility of installing TPS at the same time.
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      10-26-2020, 07:06 PM   #27
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Hmm, interesting. But I take it the designs they offer in this spec are limited?
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      10-26-2020, 07:16 PM   #28
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Ok so I'll chime in, the issue with running a 9.5 wheel in the front is not enough support for a wider tire like a 275. Remember most 275 tires have a tread width of about 10", so at the very least youd want a same width wheel.

You can run the 9.5 front wheel without any issues but it's not ideal. Ideal would be like a 265 on a 9.5 as it comes OEM. With that said that 9.5et22 size is available in every style and you are pretty much guaranteed no fitment issues.

For tracking purposes you want proper wheel support for wider tires, when you start loading up those lateral gs you'll notice the difference in sharpness.
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      10-26-2020, 07:18 PM   #29
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Quote:
Originally Posted by 786 View Post
Hmm, interesting. But I take it the designs they offer in this spec are limited?

Yes indeed. I'm actually probably going to go with a slightly different choice, 19 x 9.5 ET22 up front with 275, and 19 x 10.5 ET45 rear with 305 tire. These are available only in EC7 Which is the nice dual 7 spoke design with a pretty good dish. Nice looking wheel. I'm not such a big fan of the SM 10 which is a single spoke design. I'm thinking the anthracite finish will be a great complement to the frozen gray paint. Not that I'm vain or anything 😑

Looks like the rear wheels are not available yet, won't be in till December. So I'll probably have to do my track day on the stock wheels thankfully I have new Cup 2 I'm sure I'll be fine. I don't know what I'm doing, never been to the track before.

They offer free mount and balance if you buy tires from them, I just sent them an email to see if they could also do TPMS.
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      10-26-2020, 07:21 PM   #30
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Best 19 inch Track Rim Option, Keeping CCB, Stock GTS

Quote:
Originally Posted by erictrainer View Post
Ok so I'll chime in, the issue with running a 9.5 wheel in the front is not enough support for a wider tire like a 275. Remember most 275 tires have a tread width of about 10", so at the very least youd want a same width wheel.

You can run the 9.5 front wheel without any issues but it's not ideal. Ideal would be like a 265 on a 9.5 as it comes OEM. With that said that 9.5et22 size is available in every style and you are pretty much guaranteed no fitment issues.

For tracking purposes you want proper wheel support for wider tires, when you start loading up those lateral gs you'll notice the difference in sharpness.
This makes sense. I guess I'll have to rethink. I was sure hoping not to have to put camber plates in this thing but at least I know a good mechanic.
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      10-26-2020, 08:48 PM   #31
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Quote:
Originally Posted by h_bakken View Post
These are available only in EC7 Which is the nice dual 7 spoke design with a pretty good dish. Nice looking wheel. I'm not such a big fan of the SM 10 which is a single spoke design. I'm thinking the anthracite finish will be a great complement to the frozen gray paint.
I like the mesh design wheels they offer, not sure what they're called. Anthracite is definitely the way to go on FG.

Quote:
Originally Posted by h_bakken View Post
I was sure hoping not to have to put camber plates in this thing but at least I know a good mechanic.
I think my car has Ground Control camber plates already installed. Will have to check, I found a receipt for them in a file from the previous owner. It was a Ground Control invoice but didn't say camber plates specifically iirc, just had a SKU and price of around $600, sound about right?
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      10-26-2020, 09:16 PM   #32
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pretty sure this is an invoice for GC camber plates.
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      10-26-2020, 09:33 PM   #33
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Quote:
Originally Posted by 786 View Post
pretty sure this is an invoice for GC camber plates.
Indeed!
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      10-27-2020, 12:47 PM   #34
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Quote:
Originally Posted by fanatic1 View Post
Quote:
Originally Posted by 786 View Post
pretty sure this is an invoice for GC camber plates.
Indeed!
Any way you could post a pic of the plates installed?
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      10-27-2020, 02:09 PM   #35
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Quote:
Originally Posted by h_bakken View Post
Any way you could post a pic of the plates installed?
i've got the strut covers on but when the car goes in this week it's on my checklist for the tech to confirm. the PO might have uninstalled and sold them or they could still be on the car, i have no idea. if they are still there ill tell him to send me a pic.
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      10-27-2020, 02:10 PM   #36
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Quote:
Originally Posted by 786 View Post
Quote:
Originally Posted by h_bakken View Post
Any way you could post a pic of the plates installed?
i've got the strut covers on but when the car goes in this week it's on my checklist for the tech to confirm. the PO might have uninstalled and sold them or they could still be on the car, i have no idea. if they are still there ill tell him to send me a pic.
Thanks!
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      10-27-2020, 03:02 PM   #37
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Quote:
Originally Posted by h_bakken View Post
Any way you could post a pic of the plates installed?
Non GTS in the street or “stock camber position”
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      10-27-2020, 03:27 PM   #38
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Anyone have anything to say about other camber plate options?

Just watched a video on Millway camber plates installed on a non-GTS, looked pretty nice as well.

Also I am in San Antonio, and probably will not install camber plates myself.

Anyone have any recommendations for a suspension shop in the San Antonio or Austin area?
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      10-27-2020, 03:35 PM   #39
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Quote:
Originally Posted by h_bakken View Post
Anyone have anything to say about other camber plate options?

Just watched a video on Millway camber plates installed on a non-GTS, looked pretty nice as well.

Also I am in San Antonio, and probably will not install camber plates myself.

Anyone have any recommendations for a suspension shop in the San Antonio or Austin area?
ground control street is the way to go
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      10-27-2020, 03:51 PM   #40
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Quote:
Originally Posted by erictrainer View Post
Ok so I'll chime in, the issue with running a 9.5 wheel in the front is not enough support for a wider tire like a 275. Remember most 275 tires have a tread width of about 10", so at the very least youd want a same width wheel.

You can run the 9.5 front wheel without any issues but it's not ideal. Ideal would be like a 265 on a 9.5 as it comes OEM. With that said that 9.5et22 size is available in every style and you are pretty much guaranteed no fitment issues.

For tracking purposes you want proper wheel support for wider tires, when you start loading up those lateral gs you'll notice the difference in sharpness.
A wheel with a 9.5” listed width (mounting width measured from inside lip to inside lip where the tire bead sits) is actually 10.5” wide from outer lip to outer lip. This is true for a wheel of any width.
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      10-27-2020, 04:01 PM   #41
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Quote:
Originally Posted by SYT_Shadow View Post
ground control street is the way to go
ya, never had a bad experience with a GC product. they're owned by Eibach iirc.
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      10-27-2020, 07:38 PM   #42
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Quote:
Originally Posted by M3SQRD View Post
Quote:
Originally Posted by erictrainer View Post
Ok so I'll chime in, the issue with running a 9.5 wheel in the front is not enough support for a wider tire like a 275. Remember most 275 tires have a tread width of about 10", so at the very least youd want a same width wheel.

You can run the 9.5 front wheel without any issues but it's not ideal. Ideal would be like a 265 on a 9.5 as it comes OEM. With that said that 9.5et22 size is available in every style and you are pretty much guaranteed no fitment issues.

For tracking purposes you want proper wheel support for wider tires, when you start loading up those lateral gs you'll notice the difference in sharpness.
A wheel with a 9.5” listed width (mounting width measured from inside lip to inside lip where the tire bead sits) is actually 10.5” wide from outer lip to outer lip. This is true for a wheel of any width.
Sure but that's irrelevant because if you try to mount a 265/35/19 P4S tire for example, with a reported 9.6" tread width, on a 9.5" wheel its going to mount with a vertical sidewall, it won't give you that that bit of stretch that's ideal for performance. That stretch acts like preloading the sidewall. I'll try and find the article that best explains this and will post here if I can find it.
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      10-27-2020, 09:42 PM   #43
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Quote:
Originally Posted by erictrainer View Post
Sure but that's irrelevant because if you try to mount a 265/35/19 P4S tire for example, with a reported 9.6" tread width, on a 9.5" wheel its going to mount with a vertical sidewall, it won't give you that that bit of stretch that's ideal for performance. That stretch acts like preloading the sidewall. I'll try and find the article that best explains this and will post here if I can find it.
Your statement was you want a wheel width that’s at least as wide as the tread width. Based on this, you’d compare the true wheel width, not the inner tire bead-to-tire bead wheel width. I never said anything about whether that’s an ideal width for tire support. However, the ideal wheel width is a function of side wall stiffness. You do not see pro race series where tread width < outer wheel width. Tire width is pushed to the limit.

Last edited by M3SQRD; 10-27-2020 at 09:47 PM..
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      10-28-2020, 04:12 AM   #44
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Quote:
Originally Posted by M3SQRD View Post
Quote:
Originally Posted by erictrainer View Post
Sure but that's irrelevant because if you try to mount a 265/35/19 P4S tire for example, with a reported 9.6" tread width, on a 9.5" wheel its going to mount with a vertical sidewall, it won't give you that that bit of stretch that's ideal for performance. That stretch acts like preloading the sidewall. I'll try and find the article that best explains this and will post here if I can find it.
Your statement was you want a wheel width that's at least as wide as the tread width. Based on this, you'd compare the true wheel width, not the inner tire bead-to-tire bead wheel width. I never said anything about whether that's an ideal width for tire support. However, the ideal wheel width is a function of side wall stiffness. You do not see pro race series where tread width < outer wheel width. Tire width is pushed to the limit.
Another example, try mounting a 295 tire on an OEM 666 10" rear wheel and watch it bulb, according to your logic sidewalls should be completely straight since the true wheel width would be 11".

True wheel width is irrelevant for the sake of this discussion. Believe that's just adding confusion.
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