I went to Tampa last week which is about a 2 hour drive from my house and all was fine, then on the way home the service TPM came on for about half the ride home. I run with 20's with 33's. When I had my 22's with the low profiles on the service TPM stayed on the whole time.
I don't know what my point here was going to be
, except it seems that the service TPM does what it wants to.