Many people wait until fall to replace tires, feeling winter traction to be the primary purchase consideration. Stop and think how many vehicles you see on the roadside during hot weather with failed tires. Summer heat causes many tire failures. Look at the recent issues with Firestone and Ford. The tires overheated when run soft according to Firestone and failed.
Heat is an enemy of batteries.
Many batteries over the years have been protected by insulating blankets or plastic shrouds to help control temperatures. Most battery failures occur in summer heat or winter cold. Any indications of weakness such as slow cranking or multiple need to jump start should be addressed promptly. Cleaning cable ends should also be performed at first sign of corrosion. Please exercise caution and hydrogen gas production may be greater during hot temps and precautions followed during service to avoid explosions.