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Member
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Join Date: Mar 2010
Location: sw PA
Posts: 407
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Member
Join Date: Mar 2010
Location: sw PA
Posts: 407
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Update on the 255/75/17's.
For winter driving I went with Goodyear Duratracs mounted on OEM SR5 wheels hoping that my MPG would not drop. (OEM 265/70/17 Bridgestones are 39 lbs & 255/75/17 Duratracs are 40 lbs) Since the SR5 wheels are lighter by 2 lbs compared the the TRD OR wheels I figured it was a wash.
We have lots of rolling hills in southwestern PA & I lost a hair over 1 MPG, which is because the ring/pinion ratio is no longer 3.73. On the interstate & toll roads my transmission downshifts on hills now, where it used to hold high gear. If I lived in a flat state like Florida, I don't think this MPG would be reduced, but possibly increase by a little bit. So my next set of tires (for spring, summer & fall will be back to the OEM size. (265/70/17)
On the plus side, the Duratracs have worked well for what little snow we have had so far.
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2010 4R SR5, "best 4 wheel vehicle that I've ever owned" TRADED !
2019 4R TRD Off Road
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