A stock Sprinter runs 245/75/16's, diameter 30.5", gear ratio 3.92.
265/70/17 BFG T/A KO2's, diameter 31.7", gear ratio 3.77
275/70/17 BFG T/A KO2's, diameter 32.2", gear ratio 3.70
285/70/17 BFG T/A KO2's, diameter 32.8", gear ratio 3.62
Minimal mileage drop, minimal impact with the 265's or 275's. I run 265's on my fully built out van and average right around 16 mpg. I am considering moving up to 285's for my next set of tires.
Don't forget to consider weight in this discussion, it will have a very real impact.
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“Flint” - 2016 SMB Sprinter 4x4 144" RB 150S w/ PH
KN6BJX
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