Square Track Tire set-up with springs?
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2009-2014 Cadillac CTS-V Performance Mods Discussion, Square Track Tire set-up with springs? in Cadillac CTS-V Series Forum - 2009-2014; So I did the Eibach spring deal about a year ago and absolutely love it. Now I'm planning for some ...
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    Teutonaddict is offline Cadillac Owners Fanatic
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    Square Track Tire set-up with springs?

    So I did the Eibach spring deal about a year ago and absolutely love it.

    Now I'm planning for some road course excursions and am contemplating a dedicated track wheel/tire combo to optimize performance/wear and save my expensive PSS street rubber.

    Do any of you run a square track set-up (I'm considering 275/40-R18 NT01's or R888's all around on the 18x9.5/40 TSW Nurburgring or Interlagos wheels) with lowering springs? Any issues of rubbing up front? Performance impressions?

    Thanks in advance.

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    flyingv's Avatar
    flyingv is offline Cadillac Owners Fanatic
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    I run the interlagos 18x9.5 with 275/40/18 NT01's on D3 comp springs, no rubbing or clearance issues. Great set up, plus you can rotate the tires to make them last. Just ran my 10th track day of the year last Saturday.

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    Teutonaddict is offline Cadillac Owners Fanatic
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    Re: Square Track Tire set-up with springs?

    Very helpful, thanks. The ability to rotate is a big plus. Glad to hear no clearance issues.

    I'm slated to do a COTA event in February--can't wait.

    How do you like the NT01's?

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    The NT01s are the 3rd tire I've used. Started with R888's (Good) then tried some continental scrubs (waste of money, corded in 2 sessions). So far the NT01's are great. Real even wear, very predictable at the limit with a very audible warning, plus they become a 2 groove slick once they wear down. prefect sizing for the car too.


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    Teutonaddict is offline Cadillac Owners Fanatic
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    Re: Square Track Tire set-up with springs?

    I used to run Yokohama AO32R's on an E39 M5 sedan and they exhibited similar characteristics. Audible and predictable as they approached their limits.

    BTW, nice evidence of the Gold Caliper Club, flyingv!! What disks are you running up front? My factory originals are approaching end-of-life-cycle, so I figure I can buy the replacements before my track weekend. Thx.

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    They're replacement disc's for the 2pc brembos. Saves a couple bucks and they are slotted and cryo treated. Got them through ben at weaponX

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    Here's a picture from Buttonwillow last weekend.

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    Dr. Design is offline Cadillac Owners Connoisseur
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    Re: Square Track Tire set-up with springs?

    Hello,
    We have done quite a few cars with the square setup. You shouldn't have any issues with lowering springs and clearance as we typically run a lot of the cars on coilovers.

    This is an older car we built that has the square setup on OEM wheels with a full coilover setup. No issues with rubbing under full compression or suspension travel.

    In terms of overall performance with the square setup, you will most likely really notice the much improved turn in and response. It's amazing to feel the additional response you get with the wider 295 tire in the front.

    Let us know if you have any questions.

    Thank you,

    Dr. Design
    D3 Cadillac

    Quote Originally Posted by Teutonaddict View Post
    So I did the Eibach spring deal about a year ago and absolutely love it.

    Now I'm planning for some road course excursions and am contemplating a dedicated track wheel/tire combo to optimize performance/wear and save my expensive PSS street rubber.

    Do any of you run a square track set-up (I'm considering 275/40-R18 NT01's or R888's all around on the 18x9.5/40 TSW Nurburgring or Interlagos wheels) with lowering springs? Any issues of rubbing up front? Performance impressions?

    Thanks in advance.

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    Re: Square Track Tire set-up with springs?

    Quote Originally Posted by Teutonaddict View Post
    I'm slated to do a COTA event in February--can't wait.
    What organization is running @ COTA?

    Quote Originally Posted by flyingv View Post
    The NT01s are the 3rd tire I've used. Started with R888's (Good) then tried some continental scrubs (waste of money, corded in 2 sessions).
    That's a bummer about the GAC scrubs. Everyone else I know that has tried them (myself included) has had great luck with them. I've done a couple 2-day events on them and they still have plenty of life left (based on the wear indicators).
    CVP33 and Junior1 like this.
    '05 Stealth Grey CTS-V, Hyper Silver Linea Corse Venetos w/Continental ExtremeContact DWs (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...

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    CVP33's Avatar
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    Re: Square Track Tire set-up with springs?

    Quote Originally Posted by AAIIIC View Post
    That's a bummer about the GAC scrubs. Everyone else I know that has tried them (myself included) has had great luck with them. I've done a couple 2-day events on them and they still have plenty of life left (based on the wear indicators).
    Same here. I ran the Continentals under a 4,444 pound SRT8, 2 days, 14 - 30 minutes sessions. Still had plenty of tread left and no uneven wear issues. I plan on running them on the V as well.

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    Re: Square Track Tire set-up with springs?

    http://www.mvptracktime.com/index.html

    These guys run there in Feb. I've run a bunch of their events.

    I run 18" square TSW Nurbergrings and 275/35R18 Toyo R888 tires. Rotating helps get extra mileage out of them for sure.

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    Re: Square Track Tire set-up with springs?

    I'm looking at the turkey trot. Need to run Road Atlanta before I'm too old.

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    Quote Originally Posted by CVP33 View Post
    I'm looking at the turkey trot. Need to run Road Atlanta before I'm too old.
    You've never been? If I was where you were, I'd be living at VIR and RA...

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    cruiser68 is offline Cadillac Owners Enthusiast
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    Re: Square Track Tire set-up with springs?

    Quote Originally Posted by CVP33 View Post
    I'm looking at the turkey trot. Need to run Road Atlanta before I'm too old.
    Do it! Great track! I'm getting through my bucket list of tracks. On the east coast, Watkins Glenn and Sebring are still on my list. Then there is the west coast

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    Re: Square Track Tire set-up with springs?

    Quote Originally Posted by thebigjimsho View Post
    You've never been? If I was where you were, I'd be living at VIR and RA...
    Yeah, VIR is my home track, been 3 times. RA is 15 miles from my Brother's house. He kept telling me I needed to go there. I watched a few track videos looks like a fun track!

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