TPMS sensors not working with aftermarket rims and tires

There is a button to reprogram the pressure standards based on the current inflation under the key on the dash. A little chill goes a long way.

For the record, I run my 80psi max tires at 40psi and that provides a great mix of stability, comfort, and wear.

 

I work in vacuum mechanics, our TPMS are essentially a barometer or manometer. They have a pretty select range of pressure, wide pressure ranges are too hard to calibrate for and be accurate with. As the OP has noted it appears that any pressure above 50PSI essentially produces a interlock and will readback as a failure. Aftermarket TPMS would be the way to go.

I only asked about the SL vs E load to be certain. An E load range shouldnt have any issue airing down on a trail with stock vehicle weight or even with weight up to our payload. Noting "sidewalls touch the pavement" is very unlikely or simply a matter of perception. Airing down to 20 PSI on just about all the E loads Ive ran causes visible distortion but never anything that warrants concern or a slipped bead. Of course YMMV, but something just seems off. Running 60+ PSI on a SL will almost certainly lead to a blow out at some point.

 

You’re on the right path. There are tire psi charts available for your particular tire that determine the proper psi setting based on the load you are carrying.

I ran E-rated, 10 ply LT275/70R18s on my Tundra at about 40/42 psi front and rear, respectively. I run the exact same tire on my F-250 at 65/70 psi because I’m carrying a lot more weight. Running tires at the wrong psi can cause uneven tire wear or premature failure. Check with your tire manufacturer who should have a table to determine the proper psi setting based on the load you are carrying.

I also read somewhere on here the Tundra TPMS won’t display psi values > 50 psi. I can’t verify that is true but it might explain the issues reported.

 

Here is a pic with E rated tires (80psi max) at 22 psi - looks fairly normal to me.

 

I just purchased some new tires e-rated 305/70/18 from reading your post above when i get those new tires put on generally i would need to run them @ 40/42 psi front /rear boss!….