285/75/16 Cooper A/T

Mick, FWIW, I just put 265/75/16 BFG AT's on my 3.0Di Auto. Without getting the calculator out it's probably about half way to where you are going from the standard size. Speedo still underreads a little at 110K. I have not noticed any performance difference, the auto would probably help there at take off. I did notice more pedal pressure required to stop.Regds

Bill

Mick I to have just put 265/75/16 A/T's on my land cruiser and Im very happy with them No noticable difference. Very little difference in speedo. I went for the 265's as the dealer told me they are a tougher tyre due to the fact they have a 10 ply construction, were as the 285's have 8 ply.

Mick I have just done a quick trip to the Cape and back on 265-75-16 MT on a GU and found them to be a perfect size, only 1k out with the GPS.

They performed better in the mud than the 32-11.5-15 MT I had on a previous vehicle, and on the highway at $1.30 sat very well.

My 2nd set are Yoko Geolanders A/T + 11 in 265-70-16 for aroud town, slightly wider and handel a bit better in the wet.

Mick,

I run 285/75-16 Cooper ST's on my 3.0 tdi Auto Patrol. I would assume that diameter is the same as the A/T's due to the same manufacturer.

I also have the original 265/70-16 Bridgestone as well as a set of 265/75-16 Bridgestone originally fitted to a Patrol Ute.

With my particular vehicle my GPS tells me that with the 285's my speedo is 99.9%
accurate, the 265/70's 94% and the 265/75's 97%. I don't think you can necessarily count on this degree of accuracy, as my brother has an identical vehicle who's speedo was over 10% out (before Nissan fixed it) with 265/70's.

I notice no difference in performance under any conditions, however there is a dramatic drop off in economy under moderate to heavy off road conditions. I do not keep records on fuel consumption, but on a recent trip to the Cape, my fuel usage was higher than a Toyota 4.2 turbo 80 series and lower (not by a big margin) than a 4.2 petrol 100 series. Economy around town or on the highway is little different regardless of what tyre I have on at the time.

Hope this helps

Gordon

Mick,

I have never taken it to them with the 285's on, so I suppose I have never put them to the test. By the same token, I would have a good argument in my favour in that the speedo is accurate with the 285's and not so otherwise.

If there was ever a problem, it would be up to them to prove that the tyre size was the cause - or in reality, for me to prove that it wasn't I suppose.

I am not sure about the 285's, but I know that our local dealer will readily fit 265/75's on Wagons as part of the initial sale.

Unless I am a bit lazy, I change to the 265's for around town, so that is what would be on the vehicle whenever it visits the dealer. In fact I can recall it going to them on one occasion with 265/70's on the front and 265/75's on the rear, and if they even noticed it, they certainly didn't mention it.

If you think this might be an issue for you, then I would certainly check the situation with Nissan - or have a second set.

Gordon

Mick,

I run the 285 St coopers on my 4.2 turbo and did find there was a noticable diferance in low down torque when pulling a 2 ton boat out of the water on the boat ramp. Fuel economy suffered a little bit but not much. Other than that not much difference. Excellent tyre except for chipping and at the moment should get over the 80 000klm as per warrenty.

Goona