Great Lakes 4x4. The largest offroad forum in the Midwest - View Single Post - 255/85r16 tires on a suburban
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Old November 1st, 2011, 07:18 PM   #4
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the 255s will fit fine, go with 265s, they were an option tire on 88-98s and fit perfectally.

your getting to technical with all this "rolling distance" and "tire weight", your only gonna get a difference if you going from say 31s to 35s and up. just go with 265/75-R16, nice size tire, very common and easy to find vs 255/85-R16.

Your not gonna get much better than 19 mpg with a 3/4 diesel just with tires. Go simple

Edit: I had a 95 3/4 burb with 265s, rpms sat right at 2 grand at 60, still got 15/16 mpg with 4.10s. it was also a 5.7L lol
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