We are actually phasing out those runway statics from PR due to them having pretty significant issues such as zfighting with the terrain etc.
If your looking into eventually making a serious map then this is what you should be looking into:
https://www.realitymod.com/forum/f189-m ... rbase.html
But since your doing a little map just for fun, it would be best to use the vBF2 runways located in \objects\roads\staticsnoblend\ but these also do zfight with the terrain etc but are still generally better than those ones you've posted.