  The high statistics that will be collected during the LHC Run-II (and beyond)
open the path to precision measurements at the TeV scale, where the PDFs will
play a crucial role in BSM searches. In the di-lepton final state accurate
measurements of the Forward-Backward Asymmetry (AFB) will be available,
particularly in the invariant mass region around the Z peak. We show that this
observable displays a statistical error which is competitive with that assigned
to the existing PDF sets and which will rapidly become smaller than the latter
as the integrated luminosity grows, thereby offering a means of constraining
the (anti)quark PDFs over a sizeable $(x,Q^2)$ range. In the context of SUSY
searches we consider the effects of employing threshold-improved PDFs in a
consistent calculation at NLO+NLL of slepton pair production cross sections.
The calculations featuring a consistent resummation procedure both at PDF and
partonic matrix element level are accompanied by PDF and scale uncertainties,
and they provide a reliable and updated theoretical estimation for experimental
data analyses at the LHC Run-II.
