tire pressure
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Owners manual booklet in the glovebox?
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Mine have been at 39
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Correct tire pressure is 36 lbs cold check before you drive with a pencil gauge, get one from Sears accugauge is the name I think. The dash read out is off I did mine with a pencil gauge to 36 lbs it showed 35 in 3 tires and 34 in one. I am going to have mine relearned at dealer. Both my Camaros never read correct, the Corvette does go figure.
The reason for high readings cold is they are shipped with 50lbs because of all the tying down on transportation. Your dealer tech never adjusted the tires my car was driven and hot when he went to adjust told him to leave at 39 so I could check cold and bleed down to proper pressure. Proper pressure saves the tires and gives better ride.
z51vett
Doug
The reason for high readings cold is they are shipped with 50lbs because of all the tying down on transportation. Your dealer tech never adjusted the tires my car was driven and hot when he went to adjust told him to leave at 39 so I could check cold and bleed down to proper pressure. Proper pressure saves the tires and gives better ride.
z51vett
Doug
The tpms don't send a signal updating the pressure when driving unless over 20 mph. They only send a signal infrequently (I forget how often) when not driven. If you go out in the morning to check tires and hit DIC to read them before driving it will be from the last time it updated sometime overnight. I drive around neighborhood at 25 mph for a few minutes for them to send a signal a couple times and then find that on both Yukon and Enclave they match my ever trusty antique Dill pencil gauge!
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36 cold all the way around, bump the rears to 39 if you have a large load.
No need to ever fill a tire to it's max, unless you are looking for leaks.
No need to ever fill a tire to it's max, unless you are looking for leaks.
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2,493 Posts
Max is the best! Well for high intensity driving....I have been to a few urban driving schools and the first 2 things you do to the car is max PSI and pull the antilock breaks.
But for this application 36 will do.So far the tires hold pressure rather good too. Only lost 1lb in almost 3 month.
//Nick
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548 Posts
Mine are set to 44 all the way around. The dealer had them set that way when I picked it up and I like the way it feels at that pressure. I realize the sticker on the door specifies 36, and I have always believed the auto companies set the recommended pressure lower than what the tires can handle so that the ride quality is softer.
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Longtaddy when the tires wear out in the center and you still have rubber on the sides remember the tire pressure you are carrying pushes out the center of the thread like a balloon being the most flexible point. Also most of your brakeing and traction will be just in the center not the whole width of the tire tread things can get slippery.
z51vett
Doug
z51vett
Doug
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Tires are usually overfilled for shipping. Dealers hardly ever correct it. Go by the manual for best performance.
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i usually start with recommended based on the car and then adjust as the tires wear...you can usually get a pretty good idea after 2500 miles as to how they are wearing...i have found that most cars benefit from having around 2 psi more than is on the door plate as the tires wear more evenly. however each vehicle is different. in any case never exceed what is written on the tire sidewall.
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This is the first brand new car I have ever owned and it came with 41psi in the tires. Took it in for the first round of the alignment and they didnt correct it. Second time around they actually did the alignment correctly but not before I finally dug into a few people about their workmanship.
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An overinflated tire is stiff and unyielding and the size of its footprint in contact with the road is reduced. If a vehicle's tires are overinflated by 6 psi, they could be damaged more easily when running over potholes or debris in the road. Higher inflated tires cannot isolate road irregularities well, causing them to ride harsher. However, higher inflation pressures usually provide an improvement in steering response and cornering stability up to a point. This is why participants who use street tires in autocrosses, track events and road races run higher than normal inflation pressures. The pressure must be checked with a quality air gauge as the inflation pressure cannot be accurately estimated through visual inspection
From the tire rack
z51vett
Doug
From the tire rack
z51vett
Doug
Mine came from the Dealership with Nitrogen in the tires. It has a green sticker on the windshield with white lettering the states: "you are riding on TIRESAFE NITROGEN"
I noticed the valve stems have a cap that has a green ring around the cap and: "N2" on each cap. I was told by the dealer that the nitrogen keeps the pressures from fluctuating from temperature changes alot better than air. Also, according to the dealer, it seems to not leak as fast as air.
I have 1000 miles on the car and during that time the temperture has been down to 21 deg. and up to 76 deg. During that time, I have noticed the tire pressures have only fluctuated by 1 psi so far.
The dealer said to bring the car back anytime and they would add nitrogen whenever it's needed for free.
I noticed the valve stems have a cap that has a green ring around the cap and: "N2" on each cap. I was told by the dealer that the nitrogen keeps the pressures from fluctuating from temperature changes alot better than air. Also, according to the dealer, it seems to not leak as fast as air.
I have 1000 miles on the car and during that time the temperture has been down to 21 deg. and up to 76 deg. During that time, I have noticed the tire pressures have only fluctuated by 1 psi so far.
The dealer said to bring the car back anytime and they would add nitrogen whenever it's needed for free.
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