Modified gear ratios

[Matt]

Has anyone modified their gearing to compensate for oversized tyres?
On suzukis you can compensate for 31s, 33s, and even 35s very easily by swapping in diffs or transfer cases from other models in the range.
Im looking for an easy solution here,like getting aother transfer case from a breakers.I did loads of mods on my previous vehicle and frankly prefer to drive this one rather than work on it.
My tyres are 31-10-50x15 at 31and3/4" diameter.
Cheers.

 

[Deleted Member S]

I would think the gearing on the petrols is different to the TDI's but which way I don't know Are you running standard suspension on yours & do you get any faulling from that size tyre on the arches etc :?

 

[Matt]

I thought petrol t case might be a posibility,and yes the tyres do rub a bit but not enough to do damage, even off road. I had to trim front bumper and mud flaps.

 

[jace]

what about patroll/navara/d21 may share gbox pieces itd make scense to keep build costs down

 

[Matt]

D21 might be good being a commercial,just wondered if someone had already tried it. My suspension is bog standard by the way.

 

[jace]

aparently the rear diff outve my d22 3.0td import will fit a patrol giving front lsd so mix/match on some things possible

 

[Terranosaurus]

As far as I've been able to work out the gearboxes are the same on the diesel and petrol models but the petrol models have lower diffs. There are lots of different ratios available in the states for the 2 diffs we have but I haven't found anything over here - but still looking.

 

[NNMan]

Is it really necessary to gear down as the tyres arent that much bigger?

I have put 33" tyres on my D22 and I preffer the gearing as they make more use of all the gears, It used to be quite difficult not to spin the wheels when they were 255/70/16.

 

[Terranosaurus]

You'll have started out with bigger tyres ion th first place I suspect. Std T2/Mav are under 29", going up to 33s or bigger is a 15% rise in gearing or moor, that can make quite a difference.

 

[Matt]

Exactly, its not a problem on the road, and off road up hill is ok,but down a steep one and you stall it against the brakes.