my 8.1 does sound dreadful but we drove over 4000 miles and three weeks for about $1200. Everything else and the whole trip was about $2000. Not bad for a three week tour. On the other hand, my buddy claims to be getting 16+ mpg on his diesel sprinter 24 ft coach. Like the man says, we have room for improvement!
I have the Tire Minder TPMS and it seems reliable as an anvil. Numbers agree with my gauge and provides much peace of mind. You do have to scroll manually through each position for pressure and temperature unless it detects a problem whereupon it'll alert and report that location.
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