Maintenance Inspections for Subaru:
Tires and Wheels
Check the tire tread depth. If the tires have uneven wear, it’s an indication of an alignment problem (see above) or over/under inflation pressure. The tires must be free of cuts, sidewall damage or abrasions on sidewalls and tread areas. Bulges in the tire sidewalls may indicate belt damage caused by contact with potholes or other obstacles. If you have really walloped a pothole, one or more of the wheels may be damaged. If the tires and wheels have passed all of these tests, make sure the tires are inflated to the recommended tire pressure. Don’t forget to check the condition of the spare tire. Its tire pressure must be up to specs too.
Winter weather driving conditions can make even a late model Subaru exhaust system look pretty crusty in short order. Check the complete exhaust system for tightness, leaks and damaged or missing parts. Attach an exhaust hose to the vehicle, then have an assistant run the vehicle while you check the exhaust system for any noise or leaks.
Check the operation of the rest of the emission control system. All hoses must be properly connected and undamaged by crankcase vapors.
Glass and Mirrors
Some states require mandatory vehicle safety inspections before license plate renewal. These inspections usually require the replacement of damaged windshields, window glass or mirrors. You’d be surprised how many motorists are unaware of the safety risks associated with driving around with a cracked windshield.
Discolored, cracked, broken or missing inside rearview or outside sideview mirrors also impede outward vision. Door windows must open and close properly. Treat the window gaskets with silicone spray to prevent squeaks. The windshield and windows should also be kept clean during winter driving.