Having a flat tire on your 5th wheel or large trailer can be a frustrating experience if you are not prepared for it. Small truck jacks may not be powerful enough or extend high enough to lift your rig should you need to change a tire. As you are getting ready for summer outings in your RV, be sure to make sure you have the proper size hydrolic jack and jack stands to allow you to easily change your tire. If you only take your rig into well populated areas, perhaps roadside service can help but if you do venture out in the wild, changing your own tire may get you back on the road quickly and with minimal cost and delay. Jacks are readily available at places like Pep Boys and other auto stores so better to be safe than sorry. My own jack is a 20 ton jack and my rig is about 13,500 pounds which more than serves my purpose. Checking your spare’s air and wear is also a good plan before heading out so that you can minimize the risk of problems on the road.