Thread: Under revving with CWP

So what happens if you stick 4.11's on but only put 265/75/16 (32") tyres on, then you are running a few percent UNDER standard gearing and over revving slightly, are you gunna use more fuel or get more benefit out of having some more torque to turn your muddies.

I imagine you are going to suffer most on the highway but maybe not... We are only talking a drop in revs of 4% here, the difference between (I think) 32" and 33" tyres....33" are the optimum tyre size for 4.11 CWP on a D2.

What's the relationship between engine working harder at lower RPM against standard gearing and taller tyres to maintain headway as oposed to sitting at slightly higher RPM... I am thinking that throttle position is pretty important in this issue particularly concerning an Auto!

Auto opinions of most interest.....

Thanks Pedro. I remember that. Trouble with a truck like mine is that what on earth would you replace it with. I was struggling with the repayments then. In the wash up though it was worth much more to keep it. This LR also took some time to warm to us - for it to become "Our car" because we were working too hard to use it and get any benefit from it. All that's changed now after a move to Qld.... and I did a spread sheet the other day and have spent an honest $18000 over 4 years on getting it right. Almost the value of the car over again. But now even my previously 4x4 hating wife occasionally places an affectionate hand on the bonnet with all the memories of great stuff we've experienced and places we've been in it.

Ian.