MIKE 18 Posted August 5, 2009 Report Share Posted August 5, 2009 I am thinking of putting bf goodrich a/t 's on and would be going up in size from 255/55/18 to 265/65/18 does anyone know how much difference this could make to the fuel consumption? Is there a way to calculate the difference in rolling radius and would this affect the speedo because the speedo is taken of the box not cable driven. Thanks Mike Quote Link to post Share on other sites
silverfoxsid08 27 Posted August 5, 2009 Report Share Posted August 5, 2009 (edited) I am thinking of putting bf goodrich a/t 's on and would be going up in size from 255/55/18 to 265/65/18 does anyone know how much difference this could make to the fuel consumption? Is there a way to calculate the difference in rolling radius and would this affect the speedo because the speedo is taken of the box not cable driven.Thanks Mike ok mike i have got 285/65/18 on my landrover td5 and the speedo is out if i do 45 im doing 52 it not bad on fuel just stedy away but if s end it on it is bad thanks steve Edited August 5, 2009 by silverfoxsid08 Quote Link to post Share on other sites
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