"Over tire" is not a commonly used term in English, and does not have any well-established antonyms. However, it might be interpreted as referring to tires that are worn or need to be replaced, in which case antonyms could include new tires, fresh tires, or unused tires. Alternatively, "over tire" could be interpreted as meaning tires that are excessively inflated, in which case antonyms might include underinflated tires or properly inflated tires. Without further context about the intended meaning of "over tire," it is difficult to provide a definitive answer about antonyms for this phrase.