Still learning

I’m looking into buying a 3D printer. The money I have spent over the years on wheels and tires would be enough to pay for it by now. All I want is to be able to pick out tires and wheels that I see for my vision, print and install. But I also need a computer, so now it’s a matter of getting the right computer? I’m reading that for printing and using slice programs I don’t need a high end computer? Anyone have some pointers on what to buy and perhaps what not to buy? TYIA.