Thread: 275x70x17" Maxxis Big Horns ....Has anyone fitted these to their D3/4?

Hi Terry, I've got a set of the older Bighorns in 265/70/17, not sure but is 275 a typo and they fit ok, do slightly rub on full lock and the rear left under full compression. These are noisy on the road and don't grip as good as the AT's, but they are mud tyres and designed for off road use and that's where they are great. I'd recommend them as a second set purely for weekends away, this is how I use mine and they will outlast the car.

Yes these would be a second set just for weekend playing. Re 275x70 17's yes Maxxis does make Big Horns in this size and they do sell them here.

Originally Posted by TerryO

This size is pretty much the same size as the 275x65x18" that Gordon had on his RRS, so they should fit. ...just!

Only if you consider 33" the same as 32".

275/70R17 is 2mm larger in overall diameter than the 275/65R18 I have fitted. So I'd imagine much the same issues as I have.

They fit with modification to the wheel-well liners and front lower lip, but you need rods (or LLAMS) fulltime to run them. Tram-line badly and awful in the wet, but a very good mud/rock tyre.

Cheers,

Gordon

Sorry - got carried away with 75s and compared 275/75-17 rather than 275/70-17.

Im running Gordons old Maxxis 275/65/18

For road use, grip is better than i thought they would be, wet grip is ok as well. The noise is not great, but we live where there are dirt roads in lots of spots and when they get on the dirt they are great. Yes I run GOE rods on the disco 3 not RRS, so not sure if there is more room in the disco 3 but rubbing on full lock is no issue. I even tried it on access mode (which was original height without the rods) and there is no rubbing at full lock, so I may be brave enough to use the rods at thier lower height for urban driving.

Ive also heard good things about the federal Cougaria. They are available in the 17" and can get them from the qld distributer (not VIC) in 275/65/18 at about $250/each. These are supposed to have less noise than the Maxxis but prob not quite as good in the nasty stuff.

The other reported issue about running oversize tyres is fuel consumption.
with the std tyres I used 12l/100km, and now it sits on 13.4l/100km.
The gearing change has been with old tyres 100 actual is 106 indicated. Now 100 actual is 98 indicated, indicating a gearing change of 8%. adding 8% to 12l/100km is 12.96 l/100km. So the real world change is 3% more fuel. Now my brain hurts abit from all the conversions.

Also my car has a fresh vv turbo and BAS remap so it probably copes with the taller gearing a bit better than the std setup would. Im getting used to the noise, and the grip on the road is not noticably worse. I dont drive the Disco3 at 9/10ths thru a mountain pass so not too bad.

Also it was commented that they wander abit at speed. As the tyres are oversized I dropped the pressure abit so the tyres arent bulging at the centres which can happen with wider tyres. Now running 36psi all round (cold). Originally at 44psi (cold) wandering at speed was more noticable.

Hi Gazm3, have you got any pics of your D3 with the Maxxis on?

It would be great to see them if possible. ...

Found one on my iphone