Some builders of home built camping trailers want to put larger tires on their Harbor Freight frames. I’ve written a thread; “Fitting Larger Tires on a HF Frame” that discusses putting oversized tires on the 4’x8’ Super Duty frame kit which comes with 12” wheels and have a 5 on 4.5 bolt pattern.
Have you put larger tires on your Harbor Freight frame? What size tires did you put under your Compact Camping trailer? What adjustments did you do to fit them?