Tire pressure

El_Lobo_Gris1500C said:

Do you get dash lights/TPMS alarms running at 35 & 38 PSI?

My dash was giving warnings when two new tires went down to about 30-32PSI, but was ok when they were around 35 - 38 PSI. New tires so I didn’t get the chance to check inflation until Inwas in the work shop with my digital tire inflator. But it’s also been around -15 to -20 C here the last few days so that’s probably thrown everything off.

Finally set them to 42 PSI as per the caculator online (vs or using my stock 20” OeM tire door sticker at 39 PSI info) now running the E LT 35” Toyo’s. I’ll use this as a starting point and get to that tire chalk test as soon as it dries up enough to do that.

Just wondering though, if I end up doing that chalk test and it shows that around 32 to 35 PSI is ideal, will I have the dash consistently annoying me with warnings?

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CheechDogg.0n37s said:

you will have the warnings unless you get alfaobd and lower the min psi limit ...

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El_Lobo_Gris1500C said:

I think I’ll be alright if I end up running around 40 - 42 PSI, but if 32 - 35 PSI ends up being ideal I’m hoping the dash doesn’t keep getting triggered being closer to the likely warning threshold of about 30PSI.

I’d love to get this Alpha OBD thing, but I’m willing to bet the dealer will be a PiTA about giving me the 4 digit pin info to access the system.

Do you have an A-OBD? Easy to use and change things on these trucks with one?

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Quick_Shifter said:

What’s the sticker inside your drivers door say to run your tires at?

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