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-   -   ZL-1 tire pressure wheres yours at? (http://www.camaro5.com/forums/showthread.php?t=236780)

joes407 07-12-2012 01:15 PM

ZL-1 tire pressure wheres yours at?
 
Just curious where everyone is keeping their tires inflated too. Mine came with 30 in the rear and 29 on the front. The manual says put 44 lbs if you gonna go over 100mph and the tire says 51 max psi. I just raised them all to 38 psi cold

Russell James 07-12-2012 01:23 PM

Your everyday pressure will be on the door label. The high pressure (44) is only for high speed/racing.

SlingShot 07-12-2012 01:26 PM

32 here

Mrose 07-12-2012 01:45 PM

35 here cold i use the onstar app on my iphone to monitor my tire pressures warm

gmgdave 07-12-2012 01:52 PM

37 psi cold, nitrogen

htron50 07-12-2012 02:22 PM

From Factory got this:

33 32


35 37


Fixed them all to 32 Cold. When hot go to 35.

ZL1Dave 07-12-2012 03:26 PM

32 cold and they go up to 35 on the highway. I have never seen anything below 31 yet and if I did I would be looking at the tires very closely

AZ-ZL1 07-12-2012 03:29 PM

32 all around

Lonny Doyle 07-12-2012 03:30 PM

1 Attachment(s)
Everyday driving I run 32

At the strip I have tried 32 and then 27, 27 hooked up better.

First time at the autocross I tried 40 and it was too much, it would not hook up.

The second time at the autocross I set it at 30 and it was a lot better.

There are triangles near the edge of the tire that are wear references. Under heavy side loads the tire will roll under, you will see scuffing start to approach the triangles, if the scuffing starts to wear away the triangles you need to add more pressure.

Silverguardrail 07-12-2012 09:25 PM

Quote:

Originally Posted by Lonny Doyle (Post 5277458)
Everyday driving I run 32

At the strip I have tried 32 and then 27, 27 hooked up better.

First time at the autocross I tried 40 and it was too much, it would not hook up.

The second time at the autocross I set it at 30 and it was a lot better.

There are triangles near the edge of the tire that are wear references. Under heavy side loads the tire will roll under, you will see scuffing start to approach the triangles, if the scuffing starts to wear away the triangles you need to add more pressure.

I just read an article online http://racingready.com/2010/05/27/ti...s-tuning-tips/ about tire pressure, the important part is near the bottom, talks about the triangles on the sidewall.

fiascoes1 07-12-2012 09:38 PM

32

16floz470ml 07-12-2012 09:47 PM

Why does the owners manual say set the pressure to 44 for high speed use and the ZL1 owners video says different. It says set the pressure to 28 front and rear when cold. Then hot pressure for the front is 38 and for the rear is 37 for high speed use?

OldScoolCamaro 07-12-2012 09:47 PM

It's suppossed to be 32 PSI as on the door jamb decal. Correct me if I am wrong.

Norm Peterson 07-13-2012 08:28 AM

Quote:

Originally Posted by joes407 (Post 5276680)
Just curious where everyone is keeping their tires inflated too. Mine came with 30 in the rear and 29 on the front. The manual says put 44 lbs if you gonna go over 100mph and the tire says 51 max psi. I just raised them all to 38 psi cold

Ignore the 51 psi max pressure on the tire for setting operating pressures. Max tire pressure is related to the tire's design basis, not vehicle operation.

I don't know why the video would differ from the manual, but delaying the onset of standing waves in the tread and maintaining tire load capacity are likely involved in the increased pressures . . . tire rated load capacity actually does drop off at very high speeds - Linky.


Norm


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