Back in 1980, my dad bought an Toyota SR5 pickup and at first check he found the tire pressure to be at 50 psi. Not sure if this is a Toyota thing but that should have been checked during the pre-delivery checks.

I too have a Limited version (gas) but the door jam states the pressure should be 35 psi.

Oh, I see, according to the manual there are 2 types of 19 inch rims with 2 different tire pressures:

These are my 19 inch rims which require 35 psi. I guess they are type B based upon the door jam:

Mine were 35 psi upon delivery.

 

View attachment 143995

Mine were 35 psi upon delivery.

I have the same wheels (limited & gas), but 33 psi on the door jam. 2 lbs is no biggie, but wierd on Toyota's part.

 

Don't believe that it is a good idea to set the TPMS warning to be the same as the pressure at which the tires are supposed to be inflated. A few degrees lower in the ambient temperature could cause a, for example, 1 psi reduction in tire pressure and that would trigger the TPMS system annoyingly, especially given day to day ambient temperature variations. Dealer here sets TPMS trigger to occur when a tire pressure falls more than 5 psi below normal inflation pressure.

 

I thought I read somewhere that dealers put nitro or over inflate tires because vehicles sit for so long so it’s a precaution. [emoji2369]


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Nitrogen is used for very cold climates. Something about lack of water moisture in nitrogen so it wont freeze. It would be a waste here in the SF Bay Area.

Your over inflate theory is plausible but it should have been correct during the pre-delivery checks after the sale.

But then again, over-inflated tires would give a bad impression during test drives unless they air down in a hidden area before the drive; I doubt it. Also hard over-inflated tires would have an impact on bearing during transit; either ocean or rail travel.

Once the tire bead has been set, you don't need to keep that high of pressure for any time to keep it there.

Here a follow-up to the tire wear pattern I mentioned in an earlier post.

This image shows the wear pattern with tires a 35 psi and 2208 miles:

 

Okay, what a difference it makes from 50 down 33 of psi, it takes bump on the road so much better. Overall a smoother and I think quieter ride. As far as gas mileage, I am still getting the exact same MPG on my short 15 mile trips these couple days. I read, we only get worse gas mileage if tires are under inflated, but no help at all being over. Maybe a loss or traction being over.

If we google "Toyota Pre-Delivery Service (PDS)", the latest I can find is for a '17 Tacoma. It does state for the dealer's to check/adjust air pressure and set TPWS. So, my only guess is that someone read wrong and inflated it to the maximum tire pressure as stated on the side of the tire, which is 51 psi.

At this point, I have no idea what is correct or wrong (if I have type A or B wheels), I am just going to inflate this to 37 lbs for now. It does not seem to ride any different from 33 lbs. It did just fine for 9k miles at about 50 lbs, so 37 lbs will be no biggie. All we do is drive the speed limit, take corners as posted, and it went thru a few rain already and not once we felt anything slip. It's not a sports car, so I am okay keeping it a little higher, but that is just me.

Oh well, check yours if you have not and have fun! =)

 

Here's the scary part. Tires will lose pressure over time. I find aluminum rims to be worse then the old steel rims. This means that if you found the tires at 50 psi after 9K, what was the original pressure

 

All vehicles being shipped have PSI's higher than what you should drive with for best traction and wear. Your dealer did a lousy PDI and didn't check the tire pressures it seems like.