JustJustin
WKR
I haven't taken my Tahoe on the highway for a full tank of straight driving. I've been getting 13 running around but that includes long idles to warm up on cold mornings and/or offroading in 4 low on every tank. I also never put my tires above 30 psi because I end up airing down to anywhere in the teens so often.I actually could get 20mpg going 70mph with the stock 265s on. That has dropped to ~18.5mpg with the 33"s. A tank full around town averages ~14.5mpg.
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