A sudden opportunity for a trip has accelerated my tire buying plans, meaning I'd like to pick up a set of tires for my pup today if possible. Since I want new rims anyway, I'd just buy them loose and mount them myself when I get home. What's my best best for shopping locally? Are trailer tires and rims popular enough that I could walk into a Costco/Belle/Discount Tire shop and expect to walk out happy with some 14" rims and tires? I'm in SE Michigan. Thanks!