What tire pressure should I run? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BAD ZL1 · 04-17-2014, 12:37 AM

I am doing the rolling half mile this weekend at the airport. Roll about an 1/8th of a mile to 50 MPH, then punch it out for 1/2 mile. I have my tires at 32.5 for the run, what do you think about that pressure? They are the stock GY's. I normally run them at 30 for every day driving. Heck, the side of the tire says 51 MAX. I am thinking traction will not be an issue in a straight line and a rolling start at 50MPH, so I wanted to keep the tires hard for less friction, more top speed. Thoughts?

joes407 · 04-17-2014, 05:55 AM

If I was going to do that race I think id have them all at 30lbs cold. With the heat they would go to probably 32 lbs on their own. Can you stomp the pedal without spinning at that tire pressure on the goodyears?

SCHUSS · 04-17-2014, 06:44 AM

I posted this before - Straight off the Michelin web site for the Pilot Super Sport.

For high-speed driving, additional inflation pressure and possibly reduced tire loading and/or upsizing is required. In the absence of specific recommendations by the vehicle manufacturer, use the following guidelines based on those in the European Tyre and Rim Technical Organization Standards Manual.

For speeds over 160km/h (100 mph), load and inflation must be adjusted according to the table below.

(Y)-Speed Rated Sizes:
Maximum Speed (mph) 118 124 130 136 143 149 155 161 168 174 180 186
Inflation Increase (psi) 0 0 0 0 1.5 3 4.5 6 7.5 7.5 7.5 7.5
Load Capacity (% of max) 100 100 100 100 100 100 100 100 100 95 90 85

white ZL1 · 04-17-2014, 06:44 AM

Hmmmm....
Wouldn't you want to run as high a pressure (and I don't mean the 51 psi on the side of the tire) as you can to minimize rolling resistance while still having proper contact patch when you punch it from 50?

32 cold gets me to 37 fully warmed up, so I'm thinking at least 37 unless you've got a way to get the tires up to temp real quick?

BAD ZL1 · 04-17-2014, 10:00 PM

Quote:

Originally Posted by white 2SS/RS

Hmmmm....
Wouldn't you want to run as high a pressure (and I don't mean the 51 psi on the side of the tire) as you can to minimize rolling resistance while still having proper contact patch when you punch it from 50?

32 cold gets me to 37 fully warmed up, so I'm thinking at least 37 unless you've got a way to get the tires up to temp real quick?

Thanks man for the help. I am not going to win anything but I did want to maximize what I can. I appreciate all the responses.

04-17-2014, 12:37 AM	#1
BAD ZL1 BAD ZL1 Drives: 2013 VIN 48 Victory Red ZL1! Join Date: Jan 2012 Location: California Posts: 707	What tire pressure should I run? I am doing the rolling half mile this weekend at the airport. Roll about an 1/8th of a mile to 50 MPH, then punch it out for 1/2 mile. I have my tires at 32.5 for the run, what do you think about that pressure? They are the stock GY's. I normally run them at 30 for every day driving. Heck, the side of the tire says 51 MAX. I am thinking traction will not be an issue in a straight line and a rolling start at 50MPH, so I wanted to keep the tires hard for less friction, more top speed. Thoughts?

04-17-2014, 06:44 AM	#3
SCHUSS 709 RWHP & 677 RWTQ Drives: 13' HPE 800 ZL1..... IOM vert, M6 Join Date: Feb 2013 Location: South Windsor, CT Posts: 1,140	I posted this before - Straight off the Michelin web site for the Pilot Super Sport. For high-speed driving, additional inflation pressure and possibly reduced tire loading and/or upsizing is required. In the absence of specific recommendations by the vehicle manufacturer, use the following guidelines based on those in the European Tyre and Rim Technical Organization Standards Manual. For speeds over 160km/h (100 mph), load and inflation must be adjusted according to the table below. (Y)-Speed Rated Sizes: Maximum Speed (mph) 118 124 130 136 143 149 155 161 168 174 180 186 Inflation Increase (psi) 0 0 0 0 1.5 3 4.5 6 7.5 7.5 7.5 7.5 Load Capacity (% of max) 100 100 100 100 100 100 100 100 100 95 90 85 __________________ 11.34 @ 124.88

04-17-2014, 05:55 AM	#2
joes407 Drives: 2014 ZL1m6 red hot #569 Join Date: Dec 2009 Location: florida Posts: 2,422	If I was going to do that race I think id have them all at 30lbs cold. With the heat they would go to probably 32 lbs on their own. Can you stomp the pedal without spinning at that tire pressure on the goodyears?

04-17-2014, 06:44 AM	#4
white ZL1 Drives: none Join Date: Aug 2011 Location: DFW area Posts: 1,844	Hmmmm.... Wouldn't you want to run as high a pressure (and I don't mean the 51 psi on the side of the tire) as you can to minimize rolling resistance while still having proper contact patch when you punch it from 50? 32 cold gets me to 37 fully warmed up, so I'm thinking at least 37 unless you've got a way to get the tires up to temp real quick?