Is it the new increased size alloys making the squeaking noise?

You have to bring it to a tire shop, lift your car so they can see where is that squeaking noise is coming. We cannot just say its your tire causing it unless you check it. But if you said that before putting a new bigger size alloys, there is no squeaking sound we can say it might be your tire rubbing the fender, you might put too big tires or wrong offset of rims. Still the best thing to do is to bring it to a tire shop to check what its is. Hope this help!