Shops Can Sell You A Battery Or Tires Without Anyone Checking The Date Code, So Read The Sidewall Code And The Battery Sticker Before You Pay

You limp into a shop with a dead battery, or you walk in because your tires are finally worn out. Someone behind the counter says they have just the thing in stock. You nod, pay and drive off feeling like you solved a problem. What you probably never did was ask the one question that could save you real money: how old is it?

A black car tire rests on brown sand in daylight.

Batteries and tires both age, even when they are sitting on a shelf. A product that has been in the back room for a long time can be sold as new, yet it has already used up part of its life before it ever touches your car. Nobody may be doing anything sneaky. Often it is simply that nobody checked. But you can check, and it only takes a minute.

Why Age Matters

Rubber breaks down with time, heat and sunlight, and tires are made of rubber and other materials that change as they age. Batteries lose capacity over time, and a battery that has sat without being charged can lose strength, sometimes permanently. A new set of tires or a new battery that has been stored for a long stretch may not last as long as a fresher one, and it can cost you the same. That is the fairness problem: you pay full price for something that already has some wear on its clock.

How To Read A Tire Date Code

Every tire has a code molded into the sidewall that begins with the letters DOT. At the end of that code is a set of four digits that tells you when the tire was made. The first two digits are the week of the year, and the last two digits are the year. So a code ending in a number like 2323 would mean the twenty-third week of 2023. It is easy to do once you know the pattern.

The code is sometimes on only one side of the tire, so you may need to look at the inside sidewall once the tire is mounted, or ask the shop to turn the tire around so you can read it before it goes on. Tires made long ago may have a three-digit code instead, which is a sign of an older tire. If you see something that looks odd, ask the person helping you to explain it.

Many tire makers and safety groups recommend paying attention to a tire’s age as well as its tread depth, and your vehicle manufacturer’s guidance in the owner’s manual is the best place to learn what applies to your car. Do not forget the spare tire either, which can age quietly in the trunk and still look fine.

How To Read A Battery Date

Batteries do not all use the same system, which is why it can be confusing. Many have a sticker on the top or side showing the month and year they were shipped, sometimes as a letter for the month and a number for the year. Others have a code stamped into the case. Because every maker does it a little differently, ask the shop to show you how to read the code on that specific battery, or check the manufacturer’s website for how their codes work.

A fresh battery is generally better, and a shop that cares about its customers should be glad to show you the date. If the date is hard to read or the shop cannot explain it, that is worth noticing.

What To Do Before You Pay

Ask to see the date code on the tire sidewall or the battery sticker before the product is installed.
If it looks older than you would like, ask for a fresher one. A good shop will usually be able to swap it.
Write the date down on your receipt or take a photo of the code for your records.
Read the warranty paperwork, because some warranties run from the date of purchase and some run from the date of manufacture.
If a store or shop will not let you see the code, consider shopping somewhere else.

Keeping It Fair

Most shops are honest, and asking is not an accusation. You are simply doing what a careful shopper does with milk at the grocery store: you look at the date. If the date is fine, you pay and go. If it is not, you have saved yourself money and a headache down the road.

You can look up safety information and recalls for tires and other equipment on the National Highway Traffic Safety Administration website, and your owner’s manual will tell you what size and type your car needs. Always have the right fit for your vehicle before you buy.

The next time someone offers you a battery or a set of tires, take a moment to read the code. It is a small habit that guards your wallet, and your safety on the road with it.

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