Can my truck tow this?

valhalla360 wrote:

JRscooby wrote:
The ring and pinion in the rearend not only change the speed/power of rotation, they also change the direction. And I'm not a engineer, but I have rebuilt rearends that have different ratios moving the same loads. A higher speed ratio puts a lot more side force on the bearings. (And most of the "Bang! truck won't go" failures happen in reverse. Turning backward, the shape of teeth adds to the force"

But we are still back to...if you are within ratings, you shouldn't expect "bang! truck won't go".

They already addressed durability when setting the ratings.

Like ALL things great and small. No matter the tow rig too, you need to know WHAT the specs are for said ratings.just because you think you are under ratings, you may very well be way the heck over the ratings.
Examples.
Minimum gradability in first gear is 12%.if on a 13% grade, you may or may not be able to start, or if you hit said grade mid trip up a road, you may stall out.
Max frontal area for a given weight is 60 sq ft for smaller rigs, 80 sq ft for larger rigs. If maxed out weight Wise, but over the frontal area, you may not you may or may not make it to freeway speed, or hold the minimum speed required up a 5% freeway grade, over heat engine, trans, differential.
Minimum speed on said 5% freeway grade is 35 or 40 mph depending on gvw of the rig. Your minimum personal spec may be 50. You would consider said spec too low. You need more HP to go 50 mph, or lower the weight of trailer or frontal area, or make it more aerodynamic to meet your min speed spec.
I've had rigs under ratings, that di way worst than those OVER ratings. Depends on how the drivetrain is speced.

Marty