EagleTribune.com, North Andover, MA

Business

March 31, 2013

New tire must match the old

(Continued)

It’s a good idea for all-wheel-drive vehicle owners to include their full-size spare with each tire rotation service so it remains the same size as its siblings. In the event a tire becomes injured and needs replacement, the spare becomes the replacement and the new, slightly larger tire goes to live in the trunk. Maintaining proper tire inflation pressure is also important.

For a great source of additional information on this topic, go to TireRack.com and click “Shopping Tools” in the top navigation bar, then click “Tech Center.” Select “Matching Tires on Four-Wheel Drive and All-Wheel Drive Vehicles.” You’ll also find very well-written articles on dozens of tire, wheel, brake, suspension and lighting topics.

My 2009 Lincoln MKZ with 35,000 miles is in great shape with no problems. I like to change the brake fluid every three or four years. Am I safe doing this myself —I have plenty of experience — or do I need to take it to the dealer because of the antilock brake system??

This is a good move. Because of complex fluid paths within the ABS brake system, Lincoln recommends pressure bleeding and refilling the system, as opposed to manual bleeding. The needed tool can be found for $100-$150, and the process is fairly simple for folks who can twist a wrench

Be sure to follow published procedures and use high performance DOT-3 brake fluid that meets or exceeds WSS-M6C62-A or WSS-M6C65-A1 specifications.

Brad Bergholdt is an automotive technology instructor at Evergreen Valley College in San Jose, Calif. Readers may send him email at under-the-hood@earthlink.net; he cannot make personal replies.

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