Transmission question/ issue?

Thats a perfect explanation!

 

Put the outers together on passenger side and the inners on the other side.

 

A company I worked for years ago had a big aluminum square. They allowed 1/4 inch on matched duels.
It is also not allowed to run a bias next to a radial. I have ran a bias at 75 lbs next to a radial at 110 Lbs because that was what we had. They did OK and thank that would probably work OK for you.
85 pounds in the smaller radial and 120 in the other. Wear them out and move on.

 

Wheels are mounted together, both must turn the same speed. Larger tire is taking more of the load and it is illegal.

 

Source?

 

I don’t know the legalities, but wonder about the effect on rears. I’m currently running 2 worn out drives one side of front axle, and 2 with good tread. I plan on buying new steers, and putting old ones back. I’ve done this quite a bit, with this Truck, over the last 11 yrs. I’ve only bought 1 new set of drives. Always kept matched heights on rear axle, slight mid matched on front axle. Axles have over 2 mil miles, so I’d say it hasn’t affected the front axle much if any. From what I’ve learned here though, it can damage the gears. I know one thing from my experience in used tires.On a Trailer mismatched tires together will put flat spots on the shorter one very fast, in a few thousand miles, shorter tires shot, same with river wear, or side tread wear. Like a flat spot, The tires only as good as the lowest tread. However, on a drive, the river wear doesn’t get worse, and the shorter tire doesn’t get flat spots like it does on a trailer. I’ve been told it’s due to torque, vs the freewheeling trailer. I’ve suspected bad shocks on trailer vs. good shocks on Truck. Still doesn’t explain the river wear. I put an old steer with a very low edge tread on my Drives,expecting it to only last a short time. But it never got worse. Ran it out, till all treads were worn. Dino’s been running those Drives for a little while now. I see no flat spots on the shorter one. Not even step wear. What does it all mean? I don’t know.

 

Tire wear never corrects itself on a free rolling tire. The torque on the drives makes that difference.
Damage to the rears is a much longer subject. Smoking duels in a mud hole is a lot worse the running tires a bit mismatched. When one side spins and the other does not the wheel speed doubles. On a single axle at 20 mph on the gauge the spinning wheels are running 40. A tandem has another set of spider gears in the power divider so it doubles again. Wheel speed is 80. Heat build up is rapid. Oil gets scorched and parts do not last long with out oil.

 

Tridrive would be 160!