heads up-275-35-19 Pilot Sport CUp 2 Dont Use

8600RPM · 09-27-2017, 05:41 PM

Guys, I had an awful handling experience a couple months back running 255-35-19 and 275-35-19 PSC 2 tires on ZCP wheel.

No matter what I did, I could not get any rear grip or get heat into the tires on multiple weekends and multiple tracks. Only when it was really hot at the Roval did I get some heat in but they still were not at all providing grip.

I jst read an article about the AMG GT R which the tire was specifically designed for. Well now I know why there was not grip. First , the GT-r 275-35-19 tire uses only 1 compound through the whole tire which is unique to this car. The Motorsport endurance compound. Normal PSC2 uses 2 compounds .

More importantly, it was designed to fit an 11 inch wheel. The side-walls seemed incfredibly flimsy both on and off the wheel. Now I know why. It was made to stretch over an 11 inch tire and with 11 inches it surely is very tight. With a 10 inch wheel, being a 275-35 tire, it was not at all a firm sidewall. I had it off the car and it was flimsy as hell

Anyway, learn from my mistake and find another size!

mercedesc63 · 09-30-2017, 10:47 AM

Quote:

Originally Posted by 8600RPM

Guys, I had an awful handling experience a couple months back running 255-35-19 and 275-35-19 PSC 2 tires on ZCP wheel.

No matter what I did, I could not get any rear grip or get heat into the tires on multiple weekends and multiple tracks. Only when it was really hot at the Roval did I get some heat in but they still were not at all providing grip.

I jst read an article about the AMG GT R which the tire was specifically designed for. Well now I know why there was not grip. First , the GT-r 275-35-19 tire uses only 1 compound through the whole tire which is unique to this car. The Motorsport endurance compound. Normal PSC2 uses 2 compounds .

More importantly, it was designed to fit an 11 inch wheel. The side-walls seemed incfredibly flimsy both on and off the wheel. Now I know why. It was made to stretch over an 11 inch tire and with 11 inches it surely is very tight. With a 10 inch wheel, being a 275-35 tire, it was not at all a firm sidewall. I had it off the car and it was flimsy as hell

Anyway, learn from my mistake and find another size!

I've always said PSC2s can be a really bad tire. Most people don't know they need to be warmed up before use.

I would recommend instead PS4S 265/35/19 and M0 295/35/19 which is designed for a E63 10" wheel.

b4hand · 09-30-2017, 10:59 AM

Quote:

Originally Posted by mercedesc63

I've always said PSC2s can be a really bad tire. Most people don't know they need to be warmed up before use.

I would recommend instead PS4S 265/35/19 and M0 295/35/19 which is designed for a E63 10" wheel.

The cup 2 and the 4s aren't even comparable.

roastbeef · 10-01-2017, 04:11 PM

you were tracking at auto club a few weeks back, right? pretty hot? what were your hot tire pressures?

///Mobbin · 10-02-2017, 11:21 AM

Thanks for the heads up!

Edward · 10-02-2017, 11:44 AM

I mean...I have the exact wheel and tire and size combo and they are so predictably grippy when warmed up. They are ineffective when cold and especially wet.
What suspension were you running on that day? Hopefully your tire PSI wasn't ballooning with the increased temps too.

When the tire is cold or worn down, they become fairly sketchy. The breakaway point becomes abrupt at that point as opposed to the super predictable Pilot SS or how I imagine the Pilot Sport 4S to be.

dparm · 10-02-2017, 01:24 PM

Quote:

Originally Posted by 8600RPM

I jst read an article about the AMG GT R which the tire was specifically designed for. Well now I know why there was not grip. First , the GT-r 275-35-19 tire uses only 1 compound through the whole tire which is unique to this car. The Motorsport endurance compound. Normal PSC2 uses 2 compounds .

Have a link to the article?

Also, is this size noted as being GT R specific, sort of like how they have *, M0, N, etc?

mercedesc63 · 10-02-2017, 02:21 PM

Quote:

Originally Posted by Edward

I mean...I have the exact wheel and tire and size combo and they are so predictably grippy when warmed up. They are ineffective when cold and especially wet.
What suspension were you running on that day? Hopefully your tire PSI wasn't ballooning with the increased temps too.

When the tire is cold or worn down, they become fairly sketchy. The breakaway point becomes abrupt at that point as opposed to the super predictable Pilot SS or how I imagine the Pilot Sport 4S to be.

+1

8600RPM · 10-04-2017, 07:27 AM

I'm not saying you cannot run them but they certainly aren't ideal as they are very different than the regular cup 2s. By all means use them and if you have full suspension I'm sure you can work around the soft sidewalls.

Just thought I'd shasre

09-27-2017, 05:41 PM	#1
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	heads up-275-35-19 Pilot Sport CUp 2 Dont Use Guys, I had an awful handling experience a couple months back running 255-35-19 and 275-35-19 PSC 2 tires on ZCP wheel. No matter what I did, I could not get any rear grip or get heat into the tires on multiple weekends and multiple tracks. Only when it was really hot at the Roval did I get some heat in but they still were not at all providing grip. I jst read an article about the AMG GT R which the tire was specifically designed for. Well now I know why there was not grip. First , the GT-r 275-35-19 tire uses only 1 compound through the whole tire which is unique to this car. The Motorsport endurance compound. Normal PSC2 uses 2 compounds . More importantly, it was designed to fit an 11 inch wheel. The side-walls seemed incfredibly flimsy both on and off the wheel. Now I know why. It was made to stretch over an 11 inch tire and with 11 inches it surely is very tight. With a 10 inch wheel, being a 275-35 tire, it was not at all a firm sidewall. I had it off the car and it was flimsy as hell Anyway, learn from my mistake and find another size!
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10-01-2017, 04:11 PM	#4
roastbeef Lieutenant General 11586 Rep 12,726 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	you were tracking at auto club a few weeks back, right? pretty hot? what were your hot tire pressures? __________________ Instagram; @roastbeefmike
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10-02-2017, 11:21 AM	#5
///Mobbin Colonel 1478 Rep 2,672 Posts Drives: m3 Join Date: Jul 2011 Location: Houston iTrader: (3)	Thanks for the heads up! __________________ 2021 Alfa Romeo Stelvio Quadrifoglio \| 2.9L \| Trofeo White Tri-Coat \| 8-spd
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10-02-2017, 11:44 AM	#6
Edward Colonel 377 Rep 2,982 Posts Drives: 2013.9999 E92 Jerez ZCP Join Date: May 2010 Location: Los Angeles iTrader: (2)	I mean...I have the exact wheel and tire and size combo and they are so predictably grippy when warmed up. They are ineffective when cold and especially wet. What suspension were you running on that day? Hopefully your tire PSI wasn't ballooning with the increased temps too. When the tire is cold or worn down, they become fairly sketchy. The breakaway point becomes abrupt at that point as opposed to the super predictable Pilot SS or how I imagine the Pilot Sport 4S to be.
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10-04-2017, 07:27 AM	#9
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	I'm not saying you cannot run them but they certainly aren't ideal as they are very different than the regular cup 2s. By all means use them and if you have full suspension I'm sure you can work around the soft sidewalls. Just thought I'd shasre
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