redmonkey928

Alright, I've had numerous sets of MPSC2's mounted up in different GT# cars; and I need someone with some more knowledge of the evolution of this tire to explain to me what has changed with them or what I'm missing.

First example (see photo of the white car) shows the tire lip being flush with the edge of the rim, it does not appear to have a "stretch" to it. This is a stock 305/30/20 tire.

Second example (see black car) shows the exact same tire installed, a 305/30/20, that appears to have the bead or hook of the tire partially showing which implies it's "stretched". This is a much newer tire than the above referenced white car's tire, I don't like it, along with it functionally making me think that there is less of a side wall on this tire over the above tire.

In my mind the tire should sit on the wheel like a Cup wheel and race tire interface, the full side wall sits flush against the rim and thus when a load is on it - it can move and work as it's designed to. On the above referenced black car's tire I feel it's a) ugly, and b) has me confused as to if it's right performance-wise and size-wise.

Any insight is appreciated, maybe I'm just one step closer to the peanut gallery but interested to hear the thoughts of others.

1963SWC

Even though the tire size is the same, I believe the difference is the N0/N1/N2 type.
Top tire is an N1, bottom is not therefore style is different. I can't tell what it is but not an N1.

CobaltCr

The difference is the newer tire has extra rubber to protect the rim. That's the hook that sticks out.

redmonkey928

Thank you.

This is where I was going in my thinking and it's a bit frustrating when you tell a Porsche dealer you want "new OEM Pilot Sport Cup 2's installed just as it was delivered when new", and this is what comes back.

GrantG

groundhog

Yep N1 is the way to go (with lip), it also has a lot more grip and holds it longer than the N0. Optimal camber is between -1.5 and -3.0.

Palting

fWhich tire, N0 or N1, came with the car depends on what year your car is? The N1's first came with the 2018 GT3's. I replaced my original tires after 5 track days (groan), and specified I wanted N1's. They had to be ordered, but I got them.

BTW, camber makes no difference with the MPSCs as far as wear is concerned. Somebody here went up as high as -3.5, succeeded in making the car slower and still wore out the darn edges. Has to do with the 2 compound thing.

SmokinGTS

That ridge on the tire is there to protect the rim in case of a flat. Get the new N1 tire for your car with new newest manufacturing date you can find.

meaker

Basically the black car has the newest version (N1). It's a better tire but I also prefer the looks of the N0 tire.. though that lip gives your rim a little protection from curb rash or road rash from a flat

GrantG

Did you wear out the fronts, rears, or both in that time? If fronts, I'd recommend adjusting the rear swaybar to stiff.

How many hours per day?

Palting

I had about 2,300 street miles before those track days, Grant, so they were already more worn from the start. It was a Friday plus two weekends. Saturday/Sundays were 2.5 hour days, so 10 hours for 4 days. Friday was open lapping, so I just kept going like the Energizer bunny . Maybe 15 hours total? I'm getting about 6-9 track days depending on the track on a full new set, now closer to 6 days as I get used to the car and push it more.

Pretty close wear front versus rear, but fronts definitely more. And, yes, have set the rear to stiff recently

Thanks!

GrantG

Sounds a bit better

yxc145

I have the top. I like that better. It protects the wheels a little better.

groundhog