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Originally Posted by rollin thunder
That’s a good list. It doesn’t show 195/75r15 but it also doesn’t have those rpo codes. coyote’s Theory of rear and front tire size seems to hold water because the sequence of the rpo codes they do have match with front and rear tire size.
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The tire theory is absolutely correct. It is set up so that a buyer could order different tires on the rear of the vehicle than on the front.
Quote:
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Originally Posted by rollin thunder
But I wonder what the standard rear end gear ratio was. In this list the rpo for a 2.73 is GS1 among several others but GQ1 is the only standard ratio line it seems. And it doesn’t actually give a ratio. If 2.73 was standard why bother giving it several othe rpo codes?
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Because the standard ratio changes based on the other powertrain items and GVW rating.
The optional ratio noun name is reported because it always stays the same (ie, GU6 = 3.42; GT4 = 3.73).
https://www.gmheritagecenter.com/doc...olet-Truck.pdf
The standard axle ratio for your configuration was 2.73:1
K