Hi all, Is it possible to turn on the wipers ? If so, please let me know.
as for improvements, weather ought to be improved such as rainy, stormy, snowy mornings and afternoons, in this way we all could do with wipers.

Not possible. Already in suggestion list.

we don´t have weather so we don´t need them

well in race 07 (yes i know they have rain) they have an occasional bug SPLAT on the windshield and you can wipe them off....

+1 for bug splat idea, although should be really down on the list of improvements to be made.
I guess when they make rain they might as well make bug splats (guessing same coding but much more random and seldom), like they would affect almost nothing (maybe aero, but again like almost nothing).