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What is Proper Tire Pressure for Cold Weather?

By Junior Damato, November 23rd, 2019

strong>Dear Doctor: I own a 2018 Chevy Cruze equipped with 17-inch aluminum wheels and the Tire Pressure Monitor, which is a great feature. The dealership told me to maintain 35 psi in all four tires, but I have noticed with colder weather now, the tire pressure has dropped off to the low 30s, and not every tire has same reading. Is this to be expected? James

Manufacturer photo: 2018 Chevy Cruze hatchback
Manufacturer photo: 2018 Chevy Cruze hatchback

strong>Dear James: As the temperatures drop so does the air pressure in the tires. When you start driving on a cold morning the tires will begin warming up with a 2 to 3 pound increase, which is normal. I'm located in New England, and we raise the recommended air pressure found on the door placard card by 3 to 4 pounds so that the TPM light will not illuminate on cold mornings.

strong>Dear Doctor: I own a 2010 Ford F-150 with 183,000. The dealer diagnosed it with "swollen lug nuts." I've never heard this phrase before. What can you tell me about swollen lug nuts? Kerry

strong>Dear Kerry: Swollen lug nuts are more common than you think on various makes and models. The cause is the poor second layer chrome, or polished cover, over the regular lug nut. Corrosion builds up between the lug nut and the lug nut cover. Make sure you replace the lug nuts with one-piece lugs, which are available at most any auto parts store.

strong>Dear Doctor: My wife has a 2016 Honda HR-V and its "Smart Entry System" icon comes on about once a week and stays on for a couple of days and then goes off for about a week and then comes back on. This has been going on for months. We changed the batteries in the keyless remotes. But each time we want to bring the vehicle to Honda the icon is off. What do you think is the problem and would Honda be able to see why the icon is coming on, even if it is not on when I take it to the dealer? John

strong>Dear John: There have been many complaints on this problem, and many vehicles take multiple pushes on the button to start the engine. I think the dealer should suggest the start stop switch. The cost is modest and worth the shot in my opinion. The most common fault is the actual push-button switch.

strong>Dear Doctor: My 2010 Volvo S80 runs like a top. But all of a sudden it doesn't start right up. I changed the spark plugs, which is the only thing I still know how to do, with no improvement. Any ideas? Artie

strong>Dear Artie: Spark plugs do not usually have anything to do with start-up, unless the plugs are fouled. As long as the battery voltage is at specifications you need to see what the computer is looking at for sensor voltage. A good ASE technician will be able to diagnose your issue.

strong>Dear Doctor: I have hated sport utility vehicles since they were introduced; as a sedan driver I cannot see past them, through them or around them. Having always loved sedans I refused to buy an SUV, but while riding in friend's SUV I found they are easy to get in and out of, along with sitting higher for a better view. I'll soon be in the market for another car, and am actually considering an SUV! Should I take the attitude, "If you can't beat them, join them." Jay

strong>Dear Jay: In 90 percent of the TV commercials I see they are are all SUVs and trucks. The SUV market is huge

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