Did you ever figure out the cause for setting them to 35psi and later (not due to heat or elevation change) the tires were measured (possibly with a different gauge) and were over 40psi?
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Nope. I just realized it the other day, and am going to drop them to 35 again and see how long they hold. Of course, the car is what is reporting that they're at 40+, so maybe I need to verify that with a gauge...
Good idea! And per the owners manual and this on the FordPass App it takes some time and comes with a warning …
“It may take up to 2 minutes of driving over 20 mph for the tire pressure monitoring system to update after you have filled your tires. Do not use the tire pressure display as a gauge as this could result in over-filling or under-filling a tire and may lead to personal injury and/or damage to the tire. Please see the information display located on your vehicle's dashboard for the most up-to-date tire pressure measurements.”
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Funny how in one sentence it says not to use the tire pressure display as a gauge, but then ends with telling me to 'see the information display... for the most up-to-date tire pressure measurements'.
Yep .. it could have been written as “Please see the information display located on your vehicle's dashboard for the most up-to-date tire pressure measurements (which could be incorrect so don’t use that information as a gauge).” ?
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LMAO. As mentioned, I am driving on the spare (sans TPMS). It can take up to 20 minutes for it to update and alarm that there is no reading from that tire!
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So, is there an easy way to confirm (or rule out) the rear differential?
Honestly, the rear diff makes the most sense. But with only 60k miles on it, I really didn't expect it to go bad so soon so I was not suspicious of it...
And this is probably a stupid question - I don't suppose just changing the diff fluid would help flush out any contaminates and everything would be fine...?
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Changing the fluid has fixed rear diff issues for some users, but unless you know that's the issue you could be wasting time/money. You need to take it to a shop to have it diagnosed. I would be sure you know the conditions to recreate the noise you're hearing, and request a test drive with the technician so you can be sure they hear it the way you do. Don't count on your description of the noise to aid in diagnosis.
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Have you been rotating your tires?
How often?
What is the air pressure in the tires psi?
If rotating tires, are you seeing this wear on every tire?
If you pull a trailer and it is not level on you hitch but riding high on your hitch and tilted backwards, it will cause the center wear on your tires.
I had wondered if the system recognizes a rotating (moving) spare tire that does not have a TPMS or is it that the system recognizes the tire with the TPMS was no longer within range.
Just curious .. the tire you removed that has its TPMS .. was it in the vehicles spare tire location or was it away from the vehicle like in a garage?
(Some owners put a TPMS on the spare so that there are 5 tires on or in the vehicle having the TPMS on the tire but I am assuming the display will only ever show a max of 4 tire pressures.)
What lift kit do you have on it?
FWIW, my 2012 F150 FX4 ran Pirellis as the OEM tires. Was supposed to get 60k out of them. Got just over 30k. The service manager told me that that particular Pirelli tire was a very soft compound tire. Not at all what one would expect on a 4x4 work(ish) Truck. What were you thinking, Ford?
So tire selection (more than just brand) is really important.
Answers the OP's question somewhat.
Back to the pix, this uneducated (but with 50+ years of driving) driver sees the pix and immediately says "suspension, alignment."
Again, FWIW.
So tire selection (more than just brand) is really important.
Answers the OP's question somewhat.
Back to the pix, this uneducated (but with 50+ years of driving) driver sees the pix and immediately says "suspension, alignment."
Again, FWIW.
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Do you have a lift kit installed?
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