Tyre Size: 265/75 or 285/75

Alan,

I actually specified 285*75 when I bought my vehicle. The reason I got this size is because I got a little bit more air between the ground and the diff. Also most of my mates have this size so if i need to use thier spare I can and they look better ;-)

Leroy

Will suck more power, depending on your state, probably won't be legal, only 15mm allowed in size.

If you don't run a suspension lift, may rub at full compression, don't quote me on that one, just hazzarding a guess.

Won't be that much more clearance.

Hi Alan,

On my previous 1HZ 80 series, i originally had 31x10.5xR15 (~265/75R16) that I changed to 33x10.5xR15 (~285/75R16).

I never noticed any major difference on road (gearing changed ~7%) but offroad was a world of improvement. On a particular beach track I previously had to lower pressures to ~20psi whereas the 33" could do it at the road pressure of 45psi. And once the 33" were lowered, it was virtually unstoppable on sand, something the diesel 80 previously didn't relish.

It was something I wished I had changed much earlier, I always knew that the bigger tyres should be better off-road, but didn't resalise by just how much. There is basically little difference between the standard 80 and 100 series and I would expect a similair level of improvement from your 100 series.

When I picked up my new GU from the dealer, the very first stop was the tyre shop where I replaced the standard 265/70 with 285/75, thats how convinced I am that 285/75s are the way to go!

Cheers

Captain

Alan,

I have always run 285/75/r16 on my 100 series and for the bulk of the reasons above. Bigger footprint, more float etc particluarly when running lower presssures. I run BFGs A/Ts and have received around 70k out of the first set on this vehicle and love the tread pattern. I also welcome the extra diff clearance provided, the gearing change is minor although I notice it most on very long steep declines and the speedo is also out which I have gotten use to.

I have a moderate suspension lift and have no problems with tyres rubbing. Good way to go in my opinion.

Stuart.

In theory the wider tyre should last longer - same weight spread over more rubber should equal better wear rate.

Looks like I am leaning towards 285's. I just hope that there is no rubbing. I'm sure they will do fine until I can afford the suspension upgrade, thanks all for your responses and if anyone else has any opinions please don't be shy....

I'd say you'll have to get wider rims too for either of these tyres. If the rims are 7 inch, which I doubt, you will be able to fit the 265's. Something to consider.
Cheers, Mark.

Alan. On a 4.2 HZJ105 the 285's do suck a fair bit of power on the road & you will notice the car will be a little sluggish at passing speeds & when climbing hills. Offroad they are great and in the lower gears you will barely notice the size difference. That extra little bit of clearance does however make a heap of difference in the rough stuff. They do fit in the wheel arches without touching.
I run the 285's as a second set for the bush but if the majority of your driving is on the blacktop I'd stick with the 265's.
Cheers Craig............
HZJ105 RV