Originally Posted by TDI-Minnie
That will work for about 100 feet, then you'll get all sorts of warning lights that the ESP or ABS detect a malfunction as the wheels are spinning at different rates.
The truck will think it's skidding.
If that were true then you couldn't use those donut spares on cars with ABS without having your warning light coming on.
Someone please correct me if I'm wrong here but ABS prevents any one of the wheels from stopping if any of the others are still turning. It's primarily purpose is to prevent skids from over breaking.
Limited slip prevents one wheel on an axle from spinning faster than the other wheel under acceleration. E. G. Skids when accelerating. When it senses slip, it locks both sides of axle together with a clutch so both spin at pretty much the same speed. If it didn't slip a little, turning corners under acceleration would cause one wheel to hop.
A locking rear end works similar to the limited slip, except both axles are locked together until you remove power.
When you lock in 4x4, there is no slip between front and rear tires through the transfer case, unless you have full time 4x4. That's why manufacturers recommend the same size tires on all wheels and that it be engaged only on "slippery" surfaces, never on dry pavement.
Running two different sizes of tires on the same axle should be ok for a limited time. It could affect handling but shouldn't tear up anything.