Door tire rating

My new 2017 TRD 4x4 Sport has a tire rating of 29 PSI on both front and rear tires. I know this is very low and was wondering if anyone else's door says 29 PSI on a new sport.

 

"door tires" must be a turd gen thing? My truck doesn't have a tire for the door.

 

It's normal. Seems low to you, but that's the balance between MPG and ride comfort that the factory has decided.
Mine is the TRD OR package with the 16" wheels and door Sticker says 30. I have them filled to 33F/32R. Much stiffer ride and I don't have the factory wheels anymore, just the stock tires and different suspension.

There's nothing that says you can't adjust your own pressure settings though. Try different settings.

 

I run 29 rear, 30 front on my 2015 DC.

 

Same on my 2016 Sport, dealer always puts them at 32 psi. Switched to TRD pro wheels and tires, same thing 32 psi.

 

Thanks guys. I just had never seen a vehicle with a 29 psi rating.

 

Worth a read:

https://toyotires-1524598101.netdna...ication_of_load_inflation_tables_20151020.pdf

 

You can use a thermo heat gun to test the even heat temperature across the tire road surface patch to determine the correct air pressure for your tires. You will have to bring them up to temperature before taking your readings. It's a bit of trial and error to get it right.

 

Does this produce a functionally different result from doing a chalk test, which is probably a bit easier to do for folks who don't have access to a thermo imager?

 

PSI, in of itself, tells you nothing of load requirement. Load requirement is whatever load index the tire is at a particular PSI.
The recommended PSI goes out the window anytime tire load index and/or size changes from stock because load requirement stays the same.
I highly recommend the Toyo tire link posted earlier.

 

Mine had a supplemental sticker for the BFG AT D load ratings that said 46. 46 was too much and causing more wear in the center. I think 29-30 is fine with the OEM tires. Seemed to be just right on my 2009.

 

I'm still on the stock 30 front and back
(Door sticker says the same)

 

I've been experimenting with running helium in my tires....great MPGs

 

My '11 TRD OR with 16 inch wheels also states 29. That is just for comfort. I run 34. no undue tire wear. Also, set to 29 triggers the tpms if the temp falls dramatically.

 

At 66 years old, comfort is good.

 

I use to run my tires at anywhere from 34 down to 32. When I went down to 30 it was like night and day as far as feeling bumps and imperfections in the road. Took alot of the harshness out of the ride and no noticeable difference in fuel mileage. The chalk test is a great way to find that sweet spot as well.

 

My 2016 TRD Sport calls for 29 pounds (door sticker). At that level it rides smooth on-road, but with a year's ownership now, I run 35 during the Spring and Summer (40 for long highway trips), but lower to 30 for Fall (wet leaves) and Winter (snow). This has worked very well for me here in Columbus, OH, and I have made 2 round trips to Florida as well. I have the stock Toyo Open Country tires.