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Discussion Starter #1
I am feeding my 16 year old's track day passion while saving for his college. (face palm)

We have OEM 18" wheels ready for track day only tires.

We will run 5-7 sessions (20 min each) per track day x 5 track days per year.

We have installed on the 981 Cayman S X73 suspension with RSS control arms and toe kits to give better than stock camber at:
FRONT -2.2 to 2.3 Camber + Toe 0
REAR -2.0 -2.1 + Toe 1-2mm

I've also installed Giro discs and Ferrodo pads.

I am thinking a good tire size will be:
Front Tire: 245/40ZR18
Rear Tire: 265/40ZR18

It seems people are using:
Nankang AR-1
Nitto NT01
Toyo R888R

We are still in Solo class this year and not pushing too hard.

Which tire above give us both better traction for the kid, yet economical on dad's wallet?

True I will only get about 10-15 sessions longevity for roughly $250/per tire cost? Just my reality?

Thanks in advance for your experienced advice.
 

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I am thinking a good tire size will be:
Front Tire: 245/40ZR18
Rear Tire: 265/40ZR18

It seems people are using:
Nankang AR-1
Nitto NT01
Toyo R888R
The R888r isn't available in that size. RS4 is worth considering if you can give up grip for longevity. I get 2 days out of set of 40tw tires, roughly 10-12 heat cycles. R888s don't last much longer, 3 days max.
 

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Discussion Starter #3
The R888r isn't available in that size. RS4 is worth considering if you can give up grip for longevity.
The R888R is available in 245/40ZR18, but you are correct, not the 265/40ZR18 size. I would use the 275/35ZR18 size on the rear.

According to Tire Rack, the Hankook R-S4 doesn't have 18" sizes. Or do you mean something different for RS4?
 

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We use www.trwholesalesolutions.com so perhaps it's different..
If you go to a 275/35 rear that opens up BFG R1s and Hoosier R7s :D
What widths are the wheels?

The R888R is available in 245/40ZR18, but you are correct, not the 265/40ZR18 size. I would use the 275/35ZR18 size on the rear.

According to Tire Rack, the Hankook R-S4 doesn't have 18" sizes. Or do you mean something different for RS4?
 

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Why make this complicated? RE71Rs in stock sizes, 235/45/18 and 265/45/18.

245/275 40/18s run the car 0.3" lower which might be too low with x73. I scrape the front like five times a day with stock size tires and x73.
 

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Nitto NT01's seem to fit the bill. We typically run the 245/40-18 and 275/40-18 combo, which keeps a ~1" tire height stagger F/R
Same sizes my wife runs in her 981 CS. She gets a year of DEs, or about 5-6 weekends out of a set. Good grip, predictable, and lots of feedback at the edge. I'd like to try something else one day, but every time she needs a new set (she's burned through 5 sets so far), she insists on going back with the NT01s.
269274
 

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I wouldn't be looking to 45's for track tires. 40's Ok or better still 35's You want shorter sidewalks; not taller. I haven't run Nitto's for many years but I think E-71R are better
 
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