Storing a horse trailers - best surface to be on??

[ryansgirl]

Hi all -

What is the best surface to store/park a horse trailer on long term? I don't use mine except for emergencies or picking up bulk bags of shavings - so basically not much (and hopefully an emergency trip won't be anytime soon!). I board and the only place for my trailer is in a field. I know that is not the best thing for the tires. I'm guessing a gravel type surface is best?? Though not really sure - just wondering if there is something I should do to protect the tires. I do take it out once in awhile just to get the tires moving but... I hate having it just sit there on wet grass.

Thanks ~ :).

[Twentymetercircle]

I have rubber stall mats under my tires so they aren't directly on the dirt, which turns into mud in the winter.