Diff wind up in 4wd

I have found it isn't in the Bush that's a problem, rather, on gravel where 4WD is engaged for better traction - that's where different tyre diameter was a problem for me (my spare was a different diameter and I didn't realise). In those conditions there is much less slip and the degree of slip can drop as the surface changes. As for would 10mm be a significant difference... I will leave that to more knowledgable people than I.

Bucky said ;** "If you had 31 1/2's in front, and 35's on the back then you may have a slight problem, but the difference is not that mich, is it ? "**

Not much difference !! You must be joking - or haven't bothered to do the research !!

As an example.

A BFG Radial All Terrain 31x10.50R15LT/C does 677 turns in a mile.

A BFG Radial All terrain 35x12.50R15LT/C does 599 turns in a mile.

That is a difference of 78 turns or 13% !!

If you think that difference won't cause wind up - sorry, but you are living in fairyland.

I think what Bucky meant was that if you have 35's on one axle and 31.5's on the other you would have a problem but with the 10mm difference between his old and new tyres that is not much to worry about.

What Bucky said was if you are on the dirt, it doesn't matter a toss!! He is correct !! Michael

Bucky & Michael
I'm not concerned about in the bush as I know there will be wheel slippage, my concern was on those long gravel roads that go no for miles. Had a mate with a Suzuki stockman that had new rear and 3/4 worn front and suffered wind up.
Who would put 31's on front and 35's on rear anyhow, just looking for trouble.
Murray

Girls
Settle down.

The original post said
"There's about 10mm differance in tread depth and I don't think i will have a problem. What is your opinion on this."

It's the same tyre, with new "full tread", only 10 mm difference.
And it's an opinion, not law !

Murray it will not matter.

Cheers
Bucky

John
yes agree with that.
Murray

Gday Murray
I would agree with Bonz on this. The difference between old and new is taken up with the differential, as that is its job. The two tyres that are worn are both from the same axle, possibly the two that drive the vehicle all the time. Rotate them more often old son front to back.

Bonz
Sorry mate I disagree with different size tyres on one axle, the LSD in the ute is tight as you can hear it dragging a wheel on the black top on slight turn, so can see diff wear possible with the hyway km's I do if I did that.

Muzbry
Had to replace the 2 front as i got a boggy wheel alignment and realized to late and the damage was done. And yes I do rotate them every 20,000 km.
Like your new profile photo whats it like on the other side of the fence.

Murray

Good morning Murray
All your problems came from taking Betty to the airport to many times instaed of coming with us to Dargo. How is your little darling anyway after the big trip. I just had a message from Wes , he is in the waiting line at Mascot on his way to Bali . I hope he doesn't bring back anything that he didn't take with him.

On the other side of the fence the difference is vast. The old Nissan was a small car compared with this monster. The toyota has a much better turning circle and more power and economy . I took out a personal loan to fill the tank before the trip ( 160 ltrs ) to Dargo and still drove around for a week after the trip.