Sponsored

Pilot Super Sports Pressure

BeauxXL1200

Well-Known Member
Joined
Oct 5, 2014
Threads
57
Messages
1,822
Reaction score
643
Location
Austin, Texas
First Name
Ralph
Vehicle(s)
2015 Mustang GT/PP Ruby Red
Just got Michelin PSSs installed.

275/35/20s on the front. 295/35/20s on the rear. They inflated the pressure on all four at 32lbs, per the recommendation on the door panel sticker, which seems appropriate.

Anyway, just wondering if 32lbs cold pressure is the best pressure for tread life, etc.

Thanks for any thoughts. :cheers:
Sponsored

 

wildcatgoal

@sirboom_photography
Joined
Feb 8, 2016
Threads
76
Messages
6,589
Reaction score
2,500
Location
USA
Vehicle(s)
TBD
32 lbs. is ideal for the street. Leave it.

Only place I'd change that is on a road course (26-28 psi cold) or drag strip (22 psi cold rear tires only).
 
OP
OP
BeauxXL1200

BeauxXL1200

Well-Known Member
Joined
Oct 5, 2014
Threads
57
Messages
1,822
Reaction score
643
Location
Austin, Texas
First Name
Ralph
Vehicle(s)
2015 Mustang GT/PP Ruby Red
32 lbs. is ideal for the street. Leave it.

Only place I'd change that is on a road course (26-28 psi cold) or drag strip (22 psi cold rear tires only).
Thanks. I thought the recommended pressure on the door sticker was appropriate.

But then I thought, well maybe that was for the original Pirellis, which were 19s and not as wide front and back as what I'm running now.

But I'll leave them at 32lbs for daily driving. :cheers:
 

ronnieb1958

Well-Known Member
Joined
Aug 8, 2014
Threads
8
Messages
2,007
Reaction score
425
Location
Inglewood, Ca
First Name
Ronnie
Vehicle(s)
2015 Ecoboost Premium
Vehicle Showcase
1
Thanks. I thought the recommended pressure on the door sticker was appropriate.

But then I thought, well maybe that was for the original Pirellis, which were 19s and not as wide front and back as what I'm running now.

But I'll leave them at 32lbs for daily driving. :cheers:

it would be a great day for a sunny side shot! :)
 
OP
OP
BeauxXL1200

BeauxXL1200

Well-Known Member
Joined
Oct 5, 2014
Threads
57
Messages
1,822
Reaction score
643
Location
Austin, Texas
First Name
Ralph
Vehicle(s)
2015 Mustang GT/PP Ruby Red
Kinda cloudy here today, Ronnie. But here ya go. :cheers:
IMG_0718.jpg
IMG_0720.jpg
IMG_0722.jpg
 

Sponsored

Paul@PKAUTODESIGN

The Wheel guy
Diamond Sponsor
Joined
Oct 26, 2016
Threads
242
Messages
14,414
Reaction score
2,229
Location
Los Angeles, California
Website
WWW.PKAutoDesign.com
First Name
Paul A.
Vehicle(s)
2016 Shelby GT350 Tech Pack #G5531 Avalanche Grey
OP
OP
BeauxXL1200

BeauxXL1200

Well-Known Member
Joined
Oct 5, 2014
Threads
57
Messages
1,822
Reaction score
643
Location
Austin, Texas
First Name
Ralph
Vehicle(s)
2015 Mustang GT/PP Ruby Red

wildcatgoal

@sirboom_photography
Joined
Feb 8, 2016
Threads
76
Messages
6,589
Reaction score
2,500
Location
USA
Vehicle(s)
TBD
I don't understand this chart. The GT PP comes with I think Y-rated tires (186 mph) but Ford tells us to inflate them (cold) to 32 psi.

I have never, ever come across anyone who increases their tire pressure from the recommended cold level of a street vehicle (especially to something in the 40's) when they go on a road course. I haven't met everyone or come across every tire, but...

I have personally tried 26 cold, 28 cold, 32 cold, and 34 cold on my Conti DW tires at the same track (Atlanta Motosports Park). Many variables in-between of course but I split the difference of 26 and 28 and go 27 psi cold is my go-to for those tires on track and that's what I'm comfortable with. On the street, they go right back to 32 cold. 32 cold on track with Conti DW tires isn't awful but I get a lot more grip with 26.
 

Sponsored

racingandfishing

Well-Known Member
Joined
Oct 27, 2015
Threads
6
Messages
705
Reaction score
448
Location
Austin, Texas
Vehicle(s)
2015 Mustang GT PP
I don't understand this chart. The GT PP comes with I think Y-rated tires (186 mph) but Ford tells us to inflate them (cold) to 32 psi.

I have never, ever come across anyone who increases their tire pressure from the recommended cold level of a street vehicle (especially to something in the 40's) when they go on a road course. I haven't met everyone or come across every tire, but...

I have personally tried 26 cold, 28 cold, 32 cold, and 34 cold on my Conti DW tires at the same track (Atlanta Motosports Park). Many variables in-between of course but I split the difference of 26 and 28 and go 27 psi cold is my go-to for those tires on track and that's what I'm comfortable with. On the street, they go right back to 32 cold. 32 cold on track with Conti DW tires isn't awful but I get a lot more grip with 26.
No doubt that lower pressures provide better grip!

Here is a link describing why they should be increased when used at higher speed over the standard street pressure:

https://www.tirerack.com/winter/tech/techpage.jsp?techid=72

From what I am reading is so that the sidewall doesn't deflect too far (which helps to maintain stability) and so that it maintains it's load rating.

They also have charts for the other tire ratings on original link and Michelin also has the same type of information on their product pages.

Seriously though, not trying to start a debate, just get a better understanding as I just switched to the MPSS and want to ensure that I pressure them correctly. Any insights are greatly appreciated!
 

Bswor

Well-Known Member
Joined
Oct 19, 2014
Threads
8
Messages
47
Reaction score
6
Location
LA
Vehicle(s)
69 coupe, 06 saleen clone, 15 gt
Just got Michelin PSSs installed.

275/35/20s on the front. 295/35/20s on the rear. They inflated the pressure on all four at 32lbs, per the recommendation on the door panel sticker, which seems appropriate.

Anyway, just wondering if 32lbs cold pressure is the best pressure for tread life, etc.

Thanks for any thoughts. :cheers:
Do you have any rub? I'm running 295s in rear and the same steeda springs and I'm having issues with rub. What offset are your rear wheels?
Sponsored

 
 




Top