Corvette recommends 30 psi cold.....tires showed "hot" because you already started out _warm_.....

 

I run 28 cold, much better ride and they heat up to 32 hot. Agree 30 is recommended, 35 cold is to much.

 

 

Proper pressures are key, but that reading is just the air temperature inside the tire. Not overly useful data.

 

Originally all the Corvettes had tire psi at 30 cold on the door jam.
Then at one point/new model year, the base Stingrays came with tire psi at 35psi on the door jam.
GM did it solely to meet mileage ratings.
IMO tire psi at 35 cold is too high and not needed.
YMMV

 

That seems very high comparing to my temps here in AZ. I keep 35 lbs in them. For example when it is a 115 degrees or so the pressure reads 39. I have never seen them over that. And that is moving along at about 90 mph.
(When I am in Mexico where the roads are straight and I am traveling along in triple digits the tires still don't see anything over 39.)
PM me if you want to stop by if you get around Lake Havasu.

 

I run 26 PSI cold in the CA central valley... Normal pressure peaks about 32-34 with a good ride...
On the drive to Spring Mountain, outside air temp in the desert was 116 and the tires showed 35 psi.

 

Here in SoCal (Palm Springs) where its been averaging 115's lately I keep my cold temp at 30psi (sunrise / temp lows 85F).....By mid afternoon my pressures are 34~35psi with 115F ambient temps...

 

but just wondering (which I tend to do)... does anyone know what temp is considered cold vs warm vs hot? GM must have some values plugged into the system to trigger the change in the display.

 

My '01 says "30psi" and my '18 says "30psi" and I measure by gauge.

I could not imagine running 35psi!!!

 

42psi is definitely too high. Too much pressure can strain the sidewalls of your tire and cause excessive wear in the middle of tire. You also lose grip at higher pressures. I believe 38 psi hot is ideal for track from what I have read. Would recommend 30 psi cold...both the door and chevy app recommends 30. I know some folks run a little lower for a "softer" ride.

 

35 PSI is what the inside of the door is labeled for a 2016 Stingray with 18 and 19 wheels and tires that came with it. I don't know if it is the same for a Stingray with the Z51 package. I have tried lower pressures and don't notice any difference. I keep it at 35 PSI and get 32,000 miles out of my tires wearing evenly. I'll continue to do so.
I'm curious why you can't imagine running 35 PSI? Stiff ride? Grip?

 

I'm interested in the ride. Did the tires ride different? Mine seem to when it gets hotter "only" been 95 here.

 

THANK YOU---THANK YOU A comment that helped!!!! Mine certainly does but over the years in other Corvettes I have never experienced that happening must be the compound Michelin uses.

 

This is my first vehicle with run flats but my track experience with normal tires is that I can notice a difference at 8 to 10 PSI. I figure your average driver on the street would need nearly 20 PSI before things felt weird. See this article https://www.tirerack.com/tires/tiret...e.jsp?techid=2 After all this is one of reasons TPMS became required - people never checked their pressures and drove with under and/or over inflated all the time. It became a big deal when all those Explorers started flipping over due to Firestone blow outs: https://en.wikipedia.org/wiki/Firest...re_controversy Tire pressure effects both vehicle handling and gas mileage, so its important to keep your tires in their recommended ranges or risk a blow out. This is why at the track everyone I know check pressures before and after each session using a manual gauge.

 

 

 

Here is a duplicate of a post I made a while back regarding tire temp displays, with credit to Edmunds.Com
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From Edmunds.com:

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"Integrated Tire Temperature/Chassis Controls

Chevy uses the tire temperature data available through the C7's tire pressure sensors to more carefully control its ABS and electronic differential. Because the pressure sensors don't measure tire temperature directly (they actually measure the temperature of the TPMS sensor's microprocessor), it's not a perfect science, but it is one that data modeling can largely overcome. And it's one more piece of information that can be utilized to enhance the driving experience.

Tire temps are split into three categories: cold (below 45 degrees), warm (45-115 degrees) and hot (above 115 degrees). In "cold" mode ABS intervenes sooner and more progressively, while the differential is more aggressive to limit inside wheelspin. As temps increase, ABS control intervenes later and becomes more lenient, while differential locking ramps up more slowly."

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So, as per the above, it may be inconsequerntial information to display to the driver, however the data is used by the systems on the car. Frankly I would have preferred to see the actual computed temperatures displayed rather than the classifications of cold, warm, hot etc.

Turns out these numeric temps can be viewed if you have a PDR and download the Cosworth Toolbox to your PC. Run your PDR video into the Cosworth software and numerical tire temps can be seen in the toolbox display screens.
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Since I have a '16, OnStar keeps sending me messages that my tire pressure is low if it's below 35 psi (cold). I agree that's too high. 30-32 (cold) is what I prefer.