Thread: TPMS vs MPG
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Old 03-03-2011, 11:06 PM
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Briansal Briansal is offline
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Join Date: Apr 2010
Location: Calgary Alberta Canada
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Vehicle: 2010 Ram 2500
Trim Level: TRX4
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Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Default TPMS vs MPG

I put on new tires that are D rated vs the stock E rated tires. So mt tpms was tripping and my truck was telling me I was averaging 7.5mpg WTF??? I took the truck in for a oil change today and had the tpms flashed I didn't mention the mpg I wanted to see what the truck would do with the tpms not tripping. I got in the truck and instantly without any driving I checked it and is was saying average of 15mpg. Do the two interact with each other? was my truck thinking the tires were grossly under inflated and changing my fuel efficiency accordingly?
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