You can sue the person, who has failed to pay for the tires, for breach of contract / account stated in small claims court.There are no attorneys in small claims court.  The court fees vary from state to state.  You will need to check with your court clerk or online to obtain the current court filing fee.  In addition to the court filing fee, you will need to pay for a process server.  The court won't have any fee information on that, but you can look for process servers under attorney services either online or in the Yellow Pages and ask them the amount of their fees.If you prevail in the case, you can recover the court filing fee and the process server fee.You can obtain the summons and complaint (complaint is the lawsuit) forms from small claims court.  The small claims court usually has an advisor who will assist you in completing the documents.After prevailing in the case, you can enforce the judgment with a wage garnishment.