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19x11 square for stu

Originally Posted by Hotrodz From what it sounds like he is not really looking for advice or any other recommendations. It seems he wants conformation of his own idea and

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Old 12-29-2020, 04:41 PM   #16 (permalink)
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From what it sounds like he is not really looking for advice or any other recommendations. It seems he wants conformation of his own idea and so far there is no one on the forum or any circles I know of that is running 19x11 for any kind of autocross or track use. I guess that is not enough evidence for him to do something different than he is thinking.
The question was/is: "Anyone actually running 315's on 19x11 square?" The "answers" haven't exactly addressed the question as asked. The fact that 315's don't seem to be available in the 19's makes the question flawed to begin with.

Are you running the 315's on 11" square? What wheels and offset's are you running?
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Old 12-29-2020, 05:19 PM   #17 (permalink)
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Originally Posted by Hotrodz View Post
From what it sounds like he is not really looking for advice or any other recommendations. It seems he wants conformation of his own idea and so far there is no one on the forum or any circles I know of that is running 19x11 for any kind of autocross or track use. I guess that is not enough evidence for him to do something different than he is thinking.
I can see his point about tire height, speed and trying to save from having to do a up shift just before hitting the the turn. I did the same thing almost. But I raised my rpm limit to 8,000 so that I can carry the gear farther to keep from doing the up shift, down shift thing.
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Old 12-29-2020, 05:19 PM   #18 (permalink)
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The question was/is: "Anyone actually running 315's on 19x11 square?" The "answers" haven't exactly addressed the question as asked. The fact that 315's don't seem to be available in the 19's makes the question flawed to begin with.



Are you running the 315's on 11" square? What wheels and offset's are you running?
It was mentioned earlier in the thread I have two sets of wheels in 18x11. The Volks are et18 and my Enkie's are et16. I have been running NT01's in 315. Will be running either Nankang or Hoosiers. I will be in either TTU or TT 1.

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Old 12-29-2020, 05:41 PM   #19 (permalink)
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I can see his point about tire height, speed and trying to save from having to do a up shift just before hitting the the turn. I did the same thing almost. But I raised my rpm limit to 8,000 so that I can carry the gear farther to keep from doing the up shift, down shift thing.
I totally understand where he is coming from and his logic is not wrong. I think if he was on to something then he would have received a lot of comments supporting that setup. What I have seen mostly is just what you have done in moving the rev limiter up to 7500 or 8k. Some even run 4:08 gears which means lower mph per gear but you won't have to short shift. I am actually going to 3:3 gears, using an auto rear end to make gears taller to compensate for the smaller wheel and tire diameter. The results equate to higher mph per gear and the net result is the same as running 3:69 gearing.

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Old 12-29-2020, 06:31 PM   #20 (permalink)
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11" wide is wheel and 315 wide tire is max allowed in STU so that's why I'm looking to see if anyone actually runs them in STU. The 285's on 10.5 wheels are quite popular for the 350Z. I'm not suggesting that the taller tire is right for STU or everyone who tracks. I just know that it's right for me on my home track. I ran a few combinations on my 350Z and when I switched to the 285/30/18 from the 265/35/19 it cost me 8 mph and made for some uncomfortable shift points. With this car and the 285/30/19's the shift points are ideal. I don't have to upshift to 4th heading into 10, I'm just hitting the rev limiter in 4th heading into 16 and 1. Might well be totally wrong on another track, but ideal for me on mine. Gear changes aren't allowed in either of the classes I run the car except the update/backdate that would allow me to run the 3.916 which would be counterproductive. I run SCCA events, sound like you run NASA events, and with a turbo you're clearly in less restrictive classes than I run.

So you run the +16 and +18 (no spacers i assume) 11" wide wheels up front with no rubbing? Fenders rolled or cut? Since you clearly aren't running STU where a roll is legal but a cut or flare isn't I have to ask. Also how much camber are you running?
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Old 12-29-2020, 07:05 PM   #21 (permalink)
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No body work at all and no rubbing. My camber was -3.3 up front and -2 in the rear.


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