I bought a 2014 M2 106 and it has all sorts of issues, need some advice

And yes the shop and freightliner witnessed this happening

 

Maybe we have 4 out of 9 trucks doing the same thing

 

And we just took delivery of 2 more trucks with the same prob

 

ok, lets start with rough running....cummins has a fuel mapping issue with these engines ask cummins rep for the same programming fix used at factory when this issue arises...now for the brakes... vendor has issued a recall on some models of brake chamber ask dealer to check if yours are included (leaking diaphrams). for the record nearly all freightliners have 4 abs speed sensors, they are not affected by tire size...abs computer simply reduces brake pressure on wheels approaching lockup based on speed of exciter ring on hub....try a little spray silicone on window felt might help reduce wind noise..lets see did i cover everything? lol

 

Hello everyone, I try to purchase a brand new 2017 M2 106 Tow Truck with 5250 km, they drive it from US to Edmonton, Alberta.
For my new business, any advice will be very helpfull for me about this truck.
Thank you,
maqsoud1968@hotmail.com