  Let $Q$ be a wild $n$-Kronecker quiver, i.e., a quiver with two vertices,
labeled by 1 and 2, and $n\geq 3$ arrows from 2 to 1. The indecomposable
regular modules with preprojective Gabriel-Roiter submodules, in particular,
those $\tau^{-i}X$ with $\udim X=(1,c)$ for $i\geq 0$ and some $1\leq c\leq
n-1$ will be studied. It will be shown that for each $i\geq 0$ the irreducible
monomorphisms starting with $\tau^{-i}X$ give rise to a sequence of
Gabriel-Roiter inclusions, and moreover, the Gabriel-Roiter measures of those
produce a sequence of direct successors. In particular, there are infinitely
many GR-segments, i.e., a sequence of Gabriel-Roiter measures closed under
direct successors and predecessors. The case $n=3$ will be studied in detail
with the help of Fibonacci numbers. It will be proved that for a regular
component containing some indecomposable module with dimension vector $(1,1)$
or $(1,2)$, the Gabriel-Roiter measures of the indecomposable modules are
uniquely determined by their dimension vectors.
