Axle Ratio, new truck

BurbMan wrote:

valhalla360 wrote:

Terryallan wrote:
There really is a reason that lower gears are rated to tow higher weights. Something to do with physics

Explain the physics for us when both options are well within tow ratings.

That's easy...when you operate at a lower % of the rating, you place less stress on the machinery.

valhalla360 wrote:
If you have a 4x4 and are having difficulty backing into a site...drop it into 4-Lo and you will have far more torque than the 4.30 gives in 2-High. But really, that's a pretty rare issue. Most people towing 15k 5th wheels aren't backing up 20deg inclines.

4-lo is Ok sometimes, but not when you have to steer on pavement. What about bumper to bumper traffic when you are caught on the uphill going over a bridge at 5 mph? Taller gears like the 4.30's mean less strain on the transmission. What gears do you have in your F250?

When you are well within the tow ratings (as the OP suggested with either rear end), the truck is not being unduly stressed. The engineers made sure it was fine. By your logic, you should get a class 10 semi-tractor because that would reduce the stress on the drivetrain parts.

If you are struggling on the highway in bumper to bumper, you aren't within your tow ratings.

I have a 4.10 in my current F250 but that's because I bought used and that's what it had. More importantly, as a 2008, I only have a 5 speed transmission which is wildly different from an 8 or 10 speed transmission.