Lately it has been stopping to put air in one of the rear tires. For me it's probably once in 7 or 8 days. The one day my husband was helping checking in the trunk for the jack to help out a co-worker and duh there's the spare tire. It has been almost two months now, we could have purchased one more new tire and saved ourselves the headache not to mention the cost for the air service. Have you checked the condition of your spare tire? Do you even have a spare? Don't leave home without one.