Got a track related question? I'll try to answer.

[Icecreamtruk]

Originally Posted by Pat

How did you break your wheels?

Had a suspension failure and went into the wall. One wheel lost a chunk, the other one is grinded down from scraping along the wall. Both of them held air and are still round, but I wouldnt use them in that state. They both took the brunt of the impact and resulted in very little damage to the chasis (couple of control arms bent, and a bit of body work to do).

[Goingnowherefast]

Originally Posted by Takumi788

Hmm. What size tire would you run on this wheel? I have found the widest extreme performance tire (200 tw) is usually at 255/40/17. I suppose there is always r-comps and race slicks but a slight stretch to the 255/40/17 with the extra .5" wheel comparison will be interesting.

255/40/17 still. The idea being that the additional width grants a bit of artificial sidewall stiffening, allowing lower tire pressures. The Miata boys run 245/40/15 on a 10 inch wheel all day, everyday without issues. Worth noting that the 200TW tires generally run wider than normal tires, but I assume everyone in this forum section already knows that and already runs 200TW's, Hoosiers, or some form of track tire etc.

[Takumi788]

Originally Posted by Goingnowherefast

255/40/17 still.

Any idea on a timeline? This seems like a good option to try out.

[i8ur911]

Originally Posted by Takumi788

Any idea on a timeline? This seems like a good option to try out.

From what I've been told, they are hoping to have it out for next year.

[icybrzzz]

Originally Posted by Goingnowherefast

255/40/17 still. The idea being that the additional width grants a bit of artificial sidewall stiffening, allowing lower tire pressures. The Miata boys run 245/40/15 on a 10 inch wheel all day, everyday without issues. Worth noting that the 200TW tires generally run wider than normal tires, but I assume everyone in this forum section already knows that and already runs 200TW's, Hoosiers, or some form of track tire etc.

I’m going to try fitting 17x10s on my Brz next spring, looking to run the A052 or pirelli Trofeo R in 255 :p

[Goingnowherefast]

Originally Posted by icybrzzz

I’m going to try fitting 17x10s on my Brz next spring, looking to run the A052 or pirelli Trofeo R in 255 :p

Yep, same. I heard the A052's are the new 200TW jam. Can't wait to try them out!

Originally Posted by Takumi788

Any idea on a timeline? This seems like a good option to try out.

I couldn't get a definitive answer, but it sounds like it'll be next year sometime.

[CSG Mike]

Originally Posted by TommyW

I’m blown away on how many people just come back to the paddock and park it.
what is your favorite streetable track pad?

CSG C2

[ML]

I have a set of Kosei k1-Ts 17x7 14lbs~ and a set of konig hypergrams 18x8.5 18lbs. Staying with the Kosei and a 225/45 is 25lbs per tire @ 156lbs total. If I moved up to 245/40/18 26.6lbs per tire on the konigs it would be 178lbs total. So question is it worth the extra weight to go to the larger tire, or is a lighter setup better.

for context, this is a track only car, NA for now (maybe next year FI). BBK, Fortune autos 8k fronts, 6k rear (I believe, cant quite remember), stock sway bars. The car has a good bit of oversteer on the 225/45/17s which I realize could probably be toned down with suspension settings, and my own driving habits. But I need new tires any way so just wanted to hear opinions on this one aspect. I know its nit-picky and probably will be fine either way.

[i8ur911]

Originally Posted by ML

I have a set of Kosei k1-Ts 17x7 14lbs~ and a set of konig hypergrams 18x8.5 18lbs. Staying with the Kosei and a 225/45 is 25lbs per tire @ 156lbs total. If I moved up to 245/40/18 26.6lbs per tire on the konigs it would be 178lbs total. So question is it worth the extra weight to go to the larger tire, or is a lighter setup better.

for context, this is a track only car, NA for now (maybe next year FI). BBK, Fortune autos 8k fronts, 6k rear (I believe, cant quite remember), stock sway bars. The car has a good bit of oversteer on the 225/45/17s which I realize could probably be toned down with suspension settings, and my own driving habits. But I need new tires any way so just wanted to hear opinions on this one aspect. I know its nit-picky and probably will be fine either way.

What 245 tire are you considering and what is the current 225 tire?

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[ML]

Originally Posted by i8ur911

What 245 tire are you considering and what is the current 225 tire?

Sent from my Pixel 3 using Tapatalk

Currently on falken rt615k+ and that is what I apexes for the weights as well.

[i8ur911]

Originally Posted by ML

Currently on falken rt615k+ and that is what I apexes for the weights as well.

Considering you're staying with the same tire, I would think you'll get a small increase in rear grip, but not substantial. Does that outweigh (pun intended) the additional weight???

FWIW, I ran 225 NT01's a bunch this year and could get the rear to break free "if I wanted". My car is pretty neutral in terms of set up (may be similar to yours???....spring rates are identical).

I like your thinking, but ultimately I think the only way to figure out your answer is going to be data given that it's a relatively small change in the grand scheme of things.

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[peaches]

Anybody here has had the car reach or go past 130MPH? I want to know if you experience vibration or shake. When my car reaches 130 at the track I feel a vibration in the seat (not the steering wheel). I have changed the wheels and tires as it's what everybody said was the problem and there was no change. I have upgraded motor mounts, tranny mount, cf drive shaft, diff brace, clutch, and flywheel.

Any ideas?

[86league]

Recently have driven on a couple of tracks that have an uphill transition in a heavy braking zone before a corner. I'm using the compression to really help get the car slowed quickly, and am trying to trail brake into the corner.

The steering is really heavy in this circumstance. Normal?

Suspect it is and I'm just now driving hard enough to notice it.

Thanks.

[CSG Mike]

Originally Posted by 86league

Recently have driven on a couple of tracks that have an uphill transition in a heavy braking zone before a corner. I'm using the compression to really help get the car slowed quickly, and am trying to trail brake into the corner.

The steering is really heavy in this circumstance. Normal?

Suspect it is and I'm just now driving hard enough to notice it.

Thanks.

Your front tires are bottoming out in the wheel well.