Do tires need to be replaced in pairs?

[StMelanie]

Tires do not need to be replaced in pairs. Here are the relevant details: 1. If one of the four tires on a car is accidentally damaged and needs replacement, just replace that single tire while continuing to use the others that are still functional. 2. When tires wear down to the specified limit under normal conditions and require replacement, 99% of car owners replace two tires at once—one on each side—because the wear on left and right tires is generally similar. If all four tires are severely worn, all four should be replaced at once. 3. For normal tire wear, replacement is typically done in pairs (left and right). If a single tire is accidentally damaged, only the damaged tire needs to be replaced.

[DiBrandon]

As a veteran driver with over a decade of experience, I recommend replacing both tires on the same axle simultaneously. Recently, my right front tire was punctured by a nail and became unusable, while the left front tire had only run about 10,000 kilometers. Initially, I wanted to save money by replacing just one. However, as soon as I hit the road, I felt a slight steering wheel vibration, especially noticeable during turns in rainy conditions where the grip was clearly uneven. This scared me into immediately returning to the repair shop. The mechanic explained that differences in tread wear between tires can lead to braking deviation and unstable steering. In the end, I replaced the other tire as well. If the remaining tread on the old tire is over 4mm and shows no signs of uneven wear, it might be acceptable to replace just one tire of the same model in an emergency. However, for long-term use, it's really not advisable to skimp on this expense—safety is more important.

[EvelynFitz]

Last year when my SUV's rear tire got punctured, I initially only replaced the damaged one. But within two months, I noticed severe vehicle pulling. A professional technician measured with calipers - the left rear tire tread was 6.2mm while the newly replaced right rear measured 8mm, nearly 2mm difference. The mechanic explained that tread depth differences exceeding 2mm are like walking with a limp - extremely prone to fishtailing during rainy turns, and the 4WD system may interfere due to rotational speed differences. Eventually I moved the old tire to the spare position and bought a new matching tire. Nowadays tire shops offer free inspection services - it's advisable to check old tire conditions before deciding on replacement.

[MacAdriel]

My neighbor Sister Wang encountered the same issue last week. The right rear tire of her car had a bulge, while the other three tires were replaced just six months ago. The repair shop recommended replacing the rear tires in pairs, and she initially felt she was being tricked. However, the next day while picking up her child from school, she nearly rear-ended another car at a slippery intersection in the school zone—she said the car felt like it was being pulled to the right when she hit the brakes. The tire specialist explained that mixing old and new tires results in different contact areas, and even a half-millimeter difference between new and old tires can affect traction balance. She later replaced both rear tires and had a four-wheel alignment done. A special reminder for electric vehicle owners: be extra cautious as the instant torque can more easily cause skidding.

[SanElizabeth]

When performing maintenance for the fleet, we insisted that tires on the same axle must be replaced in pairs. Even if only one tire was damaged, as long as the other had run over 20,000 kilometers, we would replace both. One maintenance record showed that a car owner insisted on replacing only a single tire. Half a year later, the wear difference between the left and right front tires reached 3mm, resulting in a tailspin during an emergency lane change at 80km/h. From a safety perspective: mixing old and new tires on the steering axle can lead to uneven braking force distribution, while mixing them on the drive axle affects acceleration stability. However, if the old tire has been used for less than 5,000 kilometers and is undamaged, you can purchase a new tire of the same brand and specification to pair with it.

[JohnLee]

During last month's maintenance, they detected cracks on the sidewall of my left front tire, while the right front tire was still quite new. The service advisor showed me a test video on his tablet: tires with different wear levels going over speed bumps, with the suspension vibration amplitude differing by more than double. He mentioned that tires are now sold in pairs, which is actually more cost-effective than buying single tires. For someone like me who frequently drives on highways, it's recommended to consider replacing tires when the wear difference on the same axle exceeds 1.6mm. In the end, I replaced both front axle tires and also had wheel balancing done. A special reminder: after installing new tires, don't rush onto the highway; it's best to run them in for about 200 kilometers on city roads to allow the rubber compound to soften.