sprogg
Beginner

Hi Sprogg,

Im running 31x10.5 R15's as well and I get fair fuel economy. Our last rip to Batemans bay with a loaded trailer and family for a weeks camping was 11.9 Lt/100Km. I thought that was fair in those conditions. I didnt do any 4WDing that week either (Most places were closed due to flooding)

If you go a larger dia tyre you might have trouble with acceleration and power as the RD28T has to work harder at getting the larger tyres going. I have spoken to quite a few people and they say stick with the 31's which Im happy to do as we only go touring and not into any extreme stuff. Having said that, the GQ is quite a formidably truck and goes into some fairly haory places that other 4WDs dont.

As for tyre choice, my next set will be Maxis AT's but for our trip to the cape in a few years I will get a set of Maxis Bighorns.

Cheers,

Rob

My 2.8L turbo diesel patrol has 31X10.5 r15 tyres on it. The tyre complience tag on the door says 235X85 R16. Would it be better to put 16 inch rims and tyres back on it or is there a good reason why they have been changed to small diam rims?