Tires (again)

[75pinz]

Anyone ever used Q78 16's? I happen to have some and am getting ready to put them on. They are 35.5 tall and 10.8 wide. I think they should fit ok on my new ambulance/camper.

[Jim LaGuardia]

They will rub and twist off the lock bolt in the back if you are not carefull

[75pinz]

What the hell is the lock bolt? It sounds like a big deal.

[Jim LaGuardia]

Look at your parts book, it goes through the portal housing to lock it from rotation on the stub axle housing, in short terms you will spend $$$$$$$ to fix if it gets sheared.
34" is about the largest tire you can safely use on a 6x6 without rubbing on the underbody when articulating rough terrain.

[75pinz]

I measured them, fully inflated and they are right at 35 inches tall. I thought that prof pinz had 35.5's on his?

[lindenengineering]

I have to chime in on this 'un and confer with Jim.
I have just fixed a 710M with that problem, the bill was $4200.
LOTS OF DAMAGE.
Lots of Green Paper spend by lots of interaction by lots of big fat tyres and big wide wheels.
Beware
Dennis

[Profpinz]

I thought that prof pinz had 35.5's on his?

I run 35" (according to the manufacturers specs they are 887mm / 34.9") ....They are actually Simex 35X10.5-16 ET's on stock Pinzgauer rims (the tyre's co-designer said they'd be OK ....and he was right!)
http://www.simex4x4.com/html/s02_articl ... =55&dsb=38
They do foul a little in extreme situations, something I intend to fix in the future with a slight accelerator linkage and steering box mod.

I originally had 34" Swampers but changed, not because I didn't like Swampers, but because they are VERY difficult to get here in Oz nowadays..... Swampers have virtually dissappeared off the Australian 4WD market!

I agree with the others, that fouling can be a major problem especially if it puts an intermittent / hammering force on the mechanical components (like the continual "clipping" of a lug etc) but like most things it can be fixed with $'s

[PinzEOD]

They will rub and twist off the lock bolt in the back if you are not carefull

Been there, done that. Except, the lock bolt didn't shear, the entire axle housing 'ripped' open as it spun around. Total carnage, in the boonies. Fortunately, being a 6 X 6, I took off the tire, pinched the torn brake line, pulled off the mangled shock, secured the axle as high as I could with some cable, and drove home 90+ miles, pondering repair costs the entire distance.