My Isuzu NPR Navi has 2 spares on chain hoists under the stern, one front, one back. When I got it, the very 1st thing I did was make sure the jack/breaker bar/lug wrenches etc were all present and correct. As a force of habit I also carry a screed of tools onboard, spanners, 1/2" socket set, extended sockets etc etc. The right tool at the right time can be a present from heaven!<br><br>So far I've needed the front spare only. I got lucky, it went flat overnight in a motorcamp, so no damage done and v easy to change. I had a flat on the rear, but having duel rear tires, I didn't know until a 6 monthly inspection. Now I beat on the tires whenever I think about it with a crowbar. So far so good.<br><br>There is a case to be made for keeping a floor jack onboard, they are cheap to pick up and work much better than the standard equipment, having a bigger foot print they are less likely to sink into the mud or sand. Also if you are on a funny angle on the road berm, the standard jack may not have enough height to lift the wheel off the ground, I've had this before. A hand trowel and your leveling blocks can get you out of this fix. If you dont want to have a floor jack on board, a good size bottle jack is nearly as good.