Originally Posted by
rachel120
Thanks everyone.

I will look into different tread tires, but would I need new rims too if I get road tires? Sorry for the second question. But at least I know there's not a mechanical issue nor is there a need to rush out and buy one tomorrow, so I've got time to look at options.
No need for new rims. You just need to get a similar sized tire, but as others have recommended better suited for asphalt (slick/road or at least not nearly as knobby).