Tires won’t “go bad”. But it is not good for tires if they sit around for months.
The weight of the car is borne by the fout tires that touch the ground. The area under which the tire is stressed remains unchanged. When the tires sit for several months, the deformed parts are not easy to recover. The weight distribution around the tire will change, and the rolling radius will be uneven, causing the tire unbalanced. When driving at high speeds, body chatter is likely to occur, this will cause driving risks.
You can inflated the tire to the recommended maximum if you want them sit around for months.
