Green_Hell

In reviewing the thread history, it appears that a recommended track spec for the GTR is

Front Camber: - 2.5 to -2.7
Front Pressed Toe: 0.17 degrees total, evenly split
Caster: stock (what is the spec?)

Rear Camber: -2.2 to -2.3
Rear Toe .11 degrees total, evenly split
Caster: stock (what is the spec?)

The manual suggests that the stock camber should be achieved with a #8 shim kit on the front.

Question for the experts: What are the target shim numbers to be used in the front and rear for camber and caster for these track settings?

drroc

Mine is set at -2.2 front, and the sidewalls of the Cup2 tire looks very decent. The front inside got corded on the driver side after a single day at Laguna Seca. I am not convinced that adding more camber will make the car faster since the outside of the tire in my case was in pretty good shape.

Green_Hell

Thank you. Any idea what the shim number was for the setting?

Green_Hell

This is my alignment BEFORE. Check out the rear toe. surprising I didn't mess things up on track

Front -2.7 camber and .1mm pressed toe out. Rear -2.2 camber and 1mm toe in Shims: LF#1, RF#2, LR #6, RR#6

descartesfool

Those alignment sheets are for Porsche GT3 Cup car with over 3 degrees camber?

Green_Hell

good eyes! Obviously I was referring to the screen shot not the piece of paper behind it. It was a busy track-side shop.

drroc

Did you have a chance to try the new setup at the track? If so, how is the inside vs outside wear on the fronts?

Green_Hell

Excellent results. I am currently removing the tires to fit the street set on and will take pics. Wear and temps were all very good. Here is a sneak peak for those that want to see the car on track




Enjoy....

Green_Hell

Pilot Sport Cups with old alignment and outside edge wear

Old alignment on PSC, check out the outside edges

New alignment, Nankangs, 2 track days, 8 25 minute sessions. Even wear, they were nice and sticky.

Same Nankangs side profile, even wear, they had even temperatures they were happiest at 32PSI hot

drroc

That's seems like some pretty nice even tire wear

Justincase76

What size tires are you running on the Nankang?

Green_Hell

Stock sizes as I have an extra set of stock wheels Fronts 275/35-19 and 325/30-20 rear

user33

Which model of Nankang tire is that?

Green_Hell

CRS V2

dlefty

CRS v2 is a really good tire, are you personally liking over Sport Cup 2 and/or Sport Cup 2R?

Green_Hell

Yes. It is a better tire on the track, in the rain and maybe even on the street.... Main problem is that on the street it picks up a lot of dust and small rocks, otherwise I would be tempted to use these year round.

dlefty

Yes, I need another set, good news is the “paperwork finally cleared” so the darn containers that got rejected by customs should start arriving to their dealers soon.

Green_Hell

I have heard that story from a couple of dealers including Phil's Tires. However I was able to get stock a few weeks ago from https://shopwett.com. Somehow they were able to find the tires at a reasonable price. May be worth contacting them.