Mpg drop isx15

[Brock]

Every winter some guy (usually experienced enough to know better) complain's to me about mpg loss and the first thing I ask.

"Did you add air to your tires once it got cold?"

Usually it's a no, or yes on the 10 tires on the tractor but no on the 20 on the trailers cause they don't own them.

I filled my tires to 105psi in Aug and in Oct I checked, all 30 tires were at 85psi!!

That's a lot off added rolling resistance.