Towing 5th wheel with a 4 inch lift?

roadtriptoforever wrote:
I am looking into buying a truck and verbally committed myself to a F-350 diesel with a 4 inch lift. I am towing a rather heavy 5th wheel toy hauler and do fall just within the maximum weight fully loaded (it will probably never be fully loaded but tow rating on truck is 16,300, toy hauler is 12,000 dry and rated for 16,200 if loaded with toys)

I don't want to buy it if it's going to be a safety issue or less reliable.

Thanks

It will be less reliable for sure if suspension lifted

The 'Z' angle for the U-Joints will be greater, therefore more stress
on the U-Joints and the rest of the drive train.

Along with the over sized tires (less rev's per mile than stock), which
begets a change in effective diff ratio (lower numeric) to a higher or MPG ratio

As others have mentioned...check if the ICE has been tuned, as the type
that would lift typically (not all) has a heavy foot.

All reduces longevity and reliability, IMHO