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Old 09-23-2012, 09:57 PM   #12
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Join Date: Sep 2012
Fan#: 104128
Location: Travelers Rest, SC
What I Drive: 2009,Blue,SE

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Good replies!

Thanks to all for the replies and help! I am planning to do some experimentation this week, probably leading to having the TPMS sensors installed in the new tires eventually.

Just to cover some things mentioned:

Pressure: Actually raised it to 35psig in the new tires to see if I could improve the MPG-no significant change.

Alignment: New alignment with new wheels/tires, plus a recheck-no change.

Direction: New tires are directional-proper direction.

Weight: Possible increase, I will check. (doubt this would have much effect, especially "over the road", once up to speed the effects are minimal.)

Driving style: Again possible, but the "OTR" (highway) numbers are mostly with cruise on and it still goes down. When I first noticed the reduction, I figured that it was my being more agressive, but after a couple of thousand miles, I know it isn't.

More later!
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