Heavy haul, running consistently heavy and with lots of axles, you benefit from lower gearing. You are also running slower, so there is no efficiency loss by gearing low.If you’re thinking heavy haul your rears won’t handle it. You’d need 46K rears or heavier
What people don’t understand about specking a truck for its purpose is weights and leverage
Heavy haul guys are gonna have 4.10s or 4.30s or deeper
Buddy of mine is 65,000 empty and stacked think he said two axle jeep and 2 axle booster he’d laugh his ass off if you said 2.64s are ok in heavy haul. He’s running a newer star car with a Cummins I think
These guys are running modern mills and they the ones teaching me to drive
Buddy with a ‘07 CAT says the same keep the RPMs up or you’ll tear out your diffs. He watched a driver buy a truck and within two months he was doing diffs because of box yanking style driving
Whatever. Just trying to help the guy out same as others take time to help me out it’s the flatbed way
Flat or step that occasionally needs some flags or a permit to get over 80k, it’s pointless.
How you drive the truck is going to dictate what you are going to tear up, especially from a stop, not the gears.





