Hello to all my truck is a 2010 f150 4x4 supercrew 6.5 bed 5.4 3.73gear max tow package. Since day on truck has leaned over 1 inch on drivers rear took truck in to dealer said it was normal well after complaining they agree to replace drivers side spring ok im happy. Bring truck to dealer today to have in installed they say new spring is a 3 leaf pack and this is the new max tow springs vs what i have is a 4 leaf now. does anyone know if the new max tow is a 3leaf. I looked on the lot but none were the max tow but the ones i saw had a 3 spring pack. THEY say they will have to replace both springs now as well as the 2 shocks which is ok by me but just hope i dont lose any load capacity, i wonder why FORD has done this. was a little ticked as i had to drive 40 miles to dealer one way to find out they need to order more parts but i am happy im getting both sides changed instead

 

I have a 2010 with Max Tow and similar configuration (just an FX4). I only have a 3 leaf pack on my truck. your load capacity is dictated by the sticker in your door jam (legally) so you shouldn't be losing anything.