Did I miss the memo?
08-16-2017, 09:03 AM
#1
Did I miss the memo?
Looking around noticed people complain about the ride quality and that pointed me in the direction of tire pressure (I thought the ride was fine). Mine we all over inflated to 48 PSI (door says 38). Now a couple PSI isn't going to be the end of the world but 10 is a lot. Properly deflated to spec. Anything else I need to check on this truck?
08-16-2017, 09:10 AM
#2
Yeah I just got mine home last night and when I checked the pressures they are 45, 46, 47, etc.
I knew something wasn't right. I think the factory over inflates a bit for shipment and the prep guys are supposed to check stuff like that before delivery. But didn't.
No biggee, just something to watch out for.
S.
I knew something wasn't right. I think the factory over inflates a bit for shipment and the prep guys are supposed to check stuff like that before delivery. But didn't.
No biggee, just something to watch out for.
S.
08-16-2017, 11:17 AM
#3
Yeah I just got mine home last night and when I checked the pressures they are 45, 46, 47, etc.
I knew something wasn't right. I think the factory over inflates a bit for shipment and the prep guys are supposed to check stuff like that before delivery. But didn't.
No biggee, just something to watch out for.
S.
I knew something wasn't right. I think the factory over inflates a bit for shipment and the prep guys are supposed to check stuff like that before delivery. But didn't.
No biggee, just something to watch out for.
S.
08-17-2017, 09:29 PM
#4
I took delivery in a somewhat unusual way. I made the deal on a saturday afternoon, drove home, got my Porsche I was trading in for it, drove back, and it was after closing.
They had very little if any time to prep the truck.
One thing I noticed about a week later was there is a protective plastic disk that covers the rotors which they did not remove. That was a beeyatch to remove, all four of them.
Also, I happened to look again at the window sticker and noted I was due a bed divider which wasn't in the truck, a $300 dealer supplied item. I called them and was given it when I did my first oil change.
My tires were at 50 psi. I aired all down to 40.
They had very little if any time to prep the truck.
One thing I noticed about a week later was there is a protective plastic disk that covers the rotors which they did not remove. That was a beeyatch to remove, all four of them.
Also, I happened to look again at the window sticker and noted I was due a bed divider which wasn't in the truck, a $300 dealer supplied item. I called them and was given it when I did my first oil change.
My tires were at 50 psi. I aired all down to 40.
08-18-2017, 07:51 AM
#5
I took delivery in a somewhat unusual way. I made the deal on a saturday afternoon, drove home, got my Porsche I was trading in for it, drove back, and it was after closing.
They had very little if any time to prep the truck.
One thing I noticed about a week later was there is a protective plastic disk that covers the rotors which they did not remove. That was a beeyatch to remove, all four of them.
Also, I happened to look again at the window sticker and noted I was due a bed divider which wasn't in the truck, a $300 dealer supplied item. I called them and was given it when I did my first oil change.
My tires were at 50 psi. I aired all down to 40.
They had very little if any time to prep the truck.
One thing I noticed about a week later was there is a protective plastic disk that covers the rotors which they did not remove. That was a beeyatch to remove, all four of them.
Also, I happened to look again at the window sticker and noted I was due a bed divider which wasn't in the truck, a $300 dealer supplied item. I called them and was given it when I did my first oil change.
My tires were at 50 psi. I aired all down to 40.
Damn I checked my window sticker hoping they forgot to give me a bed extender. No such luck. Drove yesterday with correct tire pressure. Big difference. Loving this truck!
08-18-2017, 08:12 AM
#7
Senior Member
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08-18-2017, 09:37 AM
#8
I'd say something is wrong there. Nitrogen filled tires fluctuate LESS then air filled tires due to temp changes.
What are the effects of temperature change on my nitrogen filled tires?
The pressure in nitrogen filled tires will change when the temperature changes, just as it does with air filled tires, because nitrogen and oxygen respond to changes in ambient temperature in a similar manner. For example, when your vehicle is parked it will lose a similar amount of pressure for every 10 degree change in temperature, whether the tires are filled with nitrogen or air.
The calculations for this change are based on the Ideal Gas Law. A good rule of thumb is this: For every 10 F degree change in temperature, the pressure will change by 1.9%. If a tire is filled to 32 psi at a temperature of 75 F degrees and the temperature drops 10 degrees, the tire pressure will drop to 31.4 psi; a difference of .6 psi. If a 100 psi tire is filled at 75 F degrees and the temperature drops 10 degrees, the tire pressure will drop to 98.1 psi; a difference of .9 psi.
These fluctuations will occur as the temperature rises and falls no matter what the inflation gas. Fortunately, tire manufacturers are well aware of these conditions and design their tires and recommend their cold inflation pressure accordingly.
However, nitrogen does not contain the moisture and other contaminants found in compressed air so, as you drive and the tires heat up, nitrogen filled tires will fluctuate less in temperature and pressure than air filled tires while driving. The bottom line is, you will still see pressure changes with nitrogen but, overall, your tires will run cooler and at a more consistent pressure than if they were filled with air.
08-18-2017, 11:40 AM
#9
Senior Member
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08-18-2017, 03:28 PM
#10
not a bed extender, that's a factory option. A bed divider. That's a dealer installed accessory.