Topic: Tire Pressures
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In our Off Road Trip Preparation section, we suggested you carry a tire pump that is powered by your SUV's cigarette lighter. You may need a tire pump if one of your tires develops a leak while you driving off the road.

More importantly, you may need it if you use the common 4 wheel drive technique of lowering the tire pressures in all of your tires to between 15 and 20 pounds when attempting to climb steep, rocky terrain or driving on sand. The lower tire pressures will give your tires a better grip and will make them wider where they contact the ground. Experienced "jeepers" will lower the tire pressures to between 8 and 12 pounds for even better traction but we suggest you not do this with your SUV. You tires are probably tubeless tires and very low tire pressures may cause a tire to separate from the rim if stressed greatly while climbing hills.

Warning: If you lower the tire pressures on your SUV for off road travel, be sure to bring them back up to the tire pressure specifications (usually posted inside the drivers side door as shown in the bottom photograph). Do this before you travel on any highway to prevent severe tire wear or tire overheating which can cause tread separation.
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