Tire Pressure Questions - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

danhr · 09-11-2010, 07:38 PM

my fronts i run at 36 psi

my rears at 32 psi... this is because I have a wider tire in the rear, with the same aspect ratio. I lowered it so I would have an even contact patch across the tire. If I didn't, the center of my tire would wear faster than the outside

l008com · 09-11-2010, 07:44 PM

Quote:

Originally Posted by danhr

my fronts i run at 36 psi

my rears at 32 psi... this is because I have a wider tire in the rear, with the same aspect ratio. I lowered it so I would have an even contact patch across the tire. If I didn't, the center of my tire would wear faster than the outside

i just put all 4 of mine (19" stock) back to 37 psi. Compared to my last car, these tires are SIGNIFICANTLY less low-profile. So I'll go with the slightly harsher ride to get some better gas milage.

Rudy@Tirerack · 09-14-2010, 05:52 PM

The Door Sticker is the best place to start. Some spritied drivers add a couple of pounds for better handling but this will cause the ride to stiffen. Here is a link from Tire Rack regarding air pressue.

Erik@Torq · 09-14-2010, 05:58 PM

Quote:

Originally Posted by danhr

my fronts i run at 36 psi

my rears at 32 psi... this is because I have a wider tire in the rear, with the same aspect ratio. I lowered it so I would have an even contact patch across the tire. If I didn't, the center of my tire would wear faster than the outside

what tire/wheel set-up do you run? Typically the issue you mention above would be the result of a wrong size tire vs rim.

You may have more of an even contact patch, but the tire is not operating in the pressure/temperature it needs to give the best handling.

/Erik

Michael_Js · 09-14-2010, 06:56 PM

Ok, so related question: when driving on the track - not drag racing - should you increase the pressure or decrease? By how much?

When I ride my motorcycle on the track, I always remove 3-4 lbs per tire, then after the 1st session, recheck and fill or let more out.

I've seen some people add air when I think that's the opposite based on heat buildup. Some track classes have also said to increase pressure.

Thanks!

Erik@Torq · 09-15-2010, 12:10 PM

Quote:

Originally Posted by Michael_Js

Ok, so related question: when driving on the track - not drag racing - should you increase the pressure or decrease? By how much?

When I ride my motorcycle on the track, I always remove 3-4 lbs per tire, then after the 1st session, recheck and fill or let more out.

I've seen some people add air when I think that's the opposite based on heat buildup. Some track classes have also said to increase pressure.

Thanks!

Well, typically tire pressures raise quite a bit when at the track. Certain tires more then others though. Now certain tracks that have ovals and a high banking might require a little more pressure in the right front, but generally air needs to be removed.

With my Nitto's I usually start at 30/31, and adjust after a few laps depending on temps and pressure. My Toyo's get hotter so usually start about 29/30.

But everyday at the track is different, ambient temperature, humidity, driving style, suspension set-up, alignment etc all play a factor in it so where the final number is always the same for a certain tire, the starting pressure could be different every time.

Michael_Js · 09-15-2010, 01:57 PM

Thanks Erik...I'll start lower and check from there!
9/22

Willow Springs, CA!

Erik@Torq · 09-15-2010, 02:18 PM

Quote:

Originally Posted by Michael_Js

Thanks Erik...I'll start lower and check from there!
9/22

Willow Springs, CA!

No problem, let me know if you have any questions at all. You can always call if you need any help when on the track!

Let us know how you do!

/Erik

09-11-2010, 07:38 PM	#15
danhr BAMF SS Drives: 2016 Camaro 1SS A8 Join Date: Mar 2010 Location: Ford City, PA Posts: 3,024	my fronts i run at 36 psi my rears at 32 psi... this is because I have a wider tire in the rear, with the same aspect ratio. I lowered it so I would have an even contact patch across the tire. If I didn't, the center of my tire would wear faster than the outside __________________ 2016 1SS A8: FBO + Circle D + P1X + Meth + Tuned by Pray Performance Stock Longblock 800 SAE rwhp. 9.4 @ 145 mph.

09-14-2010, 06:56 PM	#19
Michael_Js SoCal C5 Family Member Drives: 2010 Camaro SS/RS - Black w/IOM; 6M Join Date: Jul 2009 Location: San Diego, CA, USA Posts: 5,298 View My Garage	Ok, so related question: when driving on the track - not drag racing - should you increase the pressure or decrease? By how much? When I ride my motorcycle on the track, I always remove 3-4 lbs per tire, then after the 1st session, recheck and fill or let more out. I've seen some people add air when I think that's the opposite based on heat buildup. Some track classes have also said to increase pressure. Thanks! __________________ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~ 2010 Black 2SS/RS; 6M; IOM, GFX, sunroof; ADM Race CAI; Zoomers CB; Viper Alarm; Pdaft F&R sways, Adj Endlinks, Rtrailing arms, Camber kit, strut brace, Front Trailing Arm Bushing; SLP Skip-Shift Elim; Tinted lights/windows; Hurst Short-throw; LoJack; Door & Dash ABL Mods; ********; JBA Shorty headers; AACStyle LEDs; Stillen DS rotors, Hawk Ceramic pads; Havoc Blk Chrome wheels: 20x9s; Lingenfelter Blk Al Pedals; RevXtreme Catch Can; Goodridge SS lines; Ported TB; RK Sport hood; Hotchkis chassis brace; KW V3 coilovers;

09-15-2010, 01:57 PM	#21
Michael_Js SoCal C5 Family Member Drives: 2010 Camaro SS/RS - Black w/IOM; 6M Join Date: Jul 2009 Location: San Diego, CA, USA Posts: 5,298 View My Garage	Thanks Erik...I'll start lower and check from there! 9/22 Willow Springs, CA! __________________ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~ 2010 Black 2SS/RS; 6M; IOM, GFX, sunroof; ADM Race CAI; Zoomers CB; Viper Alarm; Pdaft F&R sways, Adj Endlinks, Rtrailing arms, Camber kit, strut brace, Front Trailing Arm Bushing; SLP Skip-Shift Elim; Tinted lights/windows; Hurst Short-throw; LoJack; Door & Dash ABL Mods; ********; JBA Shorty headers; AACStyle LEDs; Stillen DS rotors, Hawk Ceramic pads; Havoc Blk Chrome wheels: 20x9s; Lingenfelter Blk Al Pedals; RevXtreme Catch Can; Goodridge SS lines; Ported TB; RK Sport hood; Hotchkis chassis brace; KW V3 coilovers;

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09-14-2010, 05:52 PM	#17
Rudy@Tirerack Drives: 1-800-428-8355 X4664 Join Date: Sep 2010 Location: rudy@tirerack.com Posts: 1,186	The Door Sticker is the best place to start. Some spritied drivers add a couple of pounds for better handling but this will cause the ride to stiffen. Here is a link from Tire Rack regarding air pressue.