Took the JK in to get a bad block heater replaced under warranty today. While in there I asked if they could reprogram the tire pressure on the TPMS. They weren't sure but said they would try and either way it would cost 46.50.

They were successful and I had it reprogramed to 28 psi; the pressure I run the 35" KM2's at. So now the indicator light on the dash is gone as is the chime. They said they weren't sure if it could be done because nobody had ever asked them to do it before.

So if that light and chime bug you they can fix it. I don't know how low they can go; but 28 was doable.

 

I had mine flashed also, set it down to 25 minimum. The dealer did not even charge me, took about 10 minutes.

 

I'd like to know what the lowest they can go is. It's good to know that 25 is also doable.

 

Maybe it was 28, grrrrr I can't recall. Anyway I'm running 30 in my MTZ's and like to the feel and the chalk test says all it good.. No light or dings..