TPMS & what pressure should I run in the new BFG K02's?

[umpire19]

Got my new EG BB yesterday put 285/70s on it. I am assuming that the tpms is set for the factory tires that came on it. 255/75s My question is what pressure should I run in the new BFG K02's? 35psi? Or do I go by what Fordpass app says which I am assuming is thinking I am still running the 255s.

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[Razorbak86]

Got my new EG BB yesterday put 285/70s on it. I am assuming that the tpms is set for the factory tires that came on it. 255/75s My question is what pressure should I run in the new BFG K02's? 35psi? Or do I go by what Fordpass app says which I am assuming is thinking I am still running the 255s.

The new Ford Bronco uses a Direct Tire Pressure Monitoring System (TPMS), versus an Indirect TPMS, so it measures actual tire pressure rather than just calculates theoretical air pressure based on wheel sensor readings and extrapolations from the actual running circumference of under- or over-inflated tires.

https://www.ateq-tpms.com/wp-conten...S-Diagnostic-Information-2021-Ford-Bronco.pdf

https://www.bridgestonetire.com/learn/maintenance/tire-pressure-monitoring-system-how-tpms-works/#

Bottom line, the FordPass app’s tire pressure measurement is pretty accurate, regardless of your chosen tire size.

 

[skierx728]

Does anyone happen to know what type of TPMS sensors I need for new wheels/tires? I'm not familiar w/ TPMS and not clear if there is a specific model needed to work with my Bronco or if they're sort of universal? Anyone have any links to sets they've bought/used? Thanks!

 

[HoosierDaddy]

I bought the Motorcraft ones from Rockauto.com, they come programmed.
A bit spendy, but I didn't have to do a thing.
Tire shop mounted the TPMS's and tires, I installed them on the Bronco.
Never skipped a beat, I had readings nearly immediately .... tire shop aired them to 50 psi !!!!!
The ride would jar your kidneys out!

I went from Base 16" 30's to 35 x 11.5-17 Load Range C.
I consulted the charts/calculators they have created for this scenario and aired the tire down to the suggested 32/33 psi. It rides pretty well at those pressures.

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