Examine tires for tread life, uneven wearing and cupping. Check sidewalls for cuts and nicks. Have your tires aligned if there is uneven tread wear or if you vehicle pulls to one side. Brakes should be inspected as recommended in your owner's manual or sooner if you notice pulsation, grabbing, noises or longer stopping distances. Minor brake problems should be corrected promptly.
Batteries can fail any time of the year.
The only accurate way to detect a weak battery is with professional equipment. Routine care includes scraping away corrosion from posts and cable connections, cleaning all surfaces and tightening all connections. Carry some basic tools such as a first aid kit, flares and a flashlight. Carry a gallon of water in case of a coolant leak to get you to the nearest telephone or service area. Consider purchasing a cellular telephone for emergencies.