Do you mean, be sure they are not underinflated, or do you mean to go above MFG recommendation? I have been doing the latter for a few years--I get them aired up every 2 months. I don't know what PSI winter tires normally can call for.
EDIT: OK I just looked, and saw that winter tires are not normally supposed to be 48 PSI.
So I guess the idea is that a slightly over-inflated tire will cover more ground with the same amount of gas, increasing the mileage?
Both my vehicles recommend 35 PSI cold. I have been doing the Sienna (the other car, in addition to the Highlander) at 40 cold, because I read that doing this will increase the tread life, and my Sienna chews through tires like there's no tomorrow. Would doing this also increase MPG?
Quote:
Originally Posted by Ecky
Tire pressure up! Stay with what feels safe, of course. I run 48psi in my winter tires as much because I like the handling better.
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