Why is it better to have the tandems slid forward when alleydocking?

I had to skip a lot of responses that MAY cover this (headed to the grocery store), but it depends on where you have extra room to maneuver. If the spot you're backing into will have no issues with tailswing, it's nice to have a fast-reacting trailer for maneuvering. If you have a bunch of space in FRONT of your truck, you might want the predictability of having the tandems all the way to the rear. Both have pluses and minuses.

 

I'm having a hard time so I'm done.

 

The wheel base is as long as the trailer, so you won't have to account for overswing.

 

Through repeated responses, the collaboration is evident.

So why the repetitive question?

I don't know any people of 5 years old, and VERY few people, if ANY, at 5 years old could grasp the intricacies of Truck Driving, much less Backing a Combo.
While there have been (I was equivalent at times), are and will be similarities of Drivers "sounding" like they're representing 5 year old children, a true 5 year old hasn't, as yet, the capability to drive a 70 foot combo forward, much less backward, so

isn't feasible.
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Backing a 70' combo is easy once you know the pattern of SUCCESS.
There is NO SCRIPT apart from EXPERIENCE.
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The way I LEARNED was through OTHER DRIVERS, by WATCHING, LISTENING and PRACTICING.
How YOU LEARN will be the way YOU SUCCEED.

GET OUT AND LOOK, whether it be 2 tO 20 times, it's YOUR RESPONSIBILITY!!

CHEERS!!

 

Shorter distance between the wheels (wheelbase) means the trailer reacts faster. Think of the difference between a car and a bus.

Longer distance between the wheels means the wheels will basically be 95% of the vehicle (no overswing), but it's going to take forever to get it to react when you turn the wheel.

 

I can explain this eighty different ways, but I'm hoping you get what I mean.