Would Towing ruin tie-rods

No, not if the towing operator connects to the vehicle properly. Insure to fasten tie-downs to the places provided by the manufacturer ONLY. Do not tie-down to the axles as this may change the axle alignment. Use a car trailer towing system if at all possible not a front or rear lift tow set-up. Follow the towing instructions in the owners manual or contact a dealer for the proper towing instruction for your particular model.