Member - Bill replied:

Andrew,

You must have a 3.0Di with the 265/70's. If these are the same as mine (standard fitment) they are Dueller A/T's. Beware, these are only passenger rated tyres, even though designated AT. If you are planning in any rough or rocky travel you may be advised to go to a LT rated tyre before you strike trouble, although new P rated tyres should be pretty tough up to about 40% wear. If you do change, go 75's all round, your speedo should be more accurate and you will get a little more under diff clearance. 75's are fitted std on the cab/chassis.

As for your question, IMHO, you should be able to use the 75 as a spare with no trouble do long as you don't have a locked diff or engage 4wd on a hard surface (which you are not meant to do in the Patrol). The slack in the LSD should be enough to take up the difference and putting it on the back would avoid any steering problems etc.

Regds

BillRegds

Bill

Member - Ray replied:

Change over now before you leave the blacktop on a reasonable trip.Keep the original tyres for highway use on your trailer only.I learnt the hard way that Mr Nissan puts crap tyres on his Patrols,(the only fault in a terrific (4x4)They will disintergrate on the most ordinary of gravel roads.

lizard replied:

my advice is to put the camper spare on the front in an emergency , and drive very slowly till you can get it changed .... if you put it on the rear and drove at highway speed you will cook the LSD (Nissan has the best) .

bruce.h (WA) replied:

andrew
2 things im not 1oo% sure on both so might be worth checking
1) check the legality of running different size tyres with the police inthe state your in & the states you are travelling to
2) check with your insurance company as it may null & void your insurance
also if the tryes are of diferant diamiter it can cauce damage to your diffs gear box ect.
Regards Bruce