Why you should replace parts in pairs

Replacing Parts in Pairs or Groups 

For many wear and tear repairs on a vehicle, like suspension components, tires, and some engine parts, your mechanic will often recommend replacing the part that needs to be replaced immediately as well as its mirror component. Some think this is unnecessary or a method for up-charging customers, but it is actually the most efficient way of maintaining your vehicle’s health and longevity for several reasons.

Equal Mileage

The most obvious example of keeping equal mileage on components is for tires. You should always replace tires in pairs of two, especially if they are on the drive tires. Uneven tire wear side to side can cause instability in low traction scenarios, premature suspension wear, and can make it harder to keep track of when you need to replace your tires. It can also make an alignment impossible or inaccurate because the vehicle won’t be perfectly elevated on each side, and the suspension will behave differently based on tread depth.

This principle applies to shocks/struts, control arms, etc. It is important that all suspension components are behaving in similar ways to ensure the most stable and smooth operation of the whole system. This isn’t to mention that if one side of each of these components has failed, the other is likely not far behind, so it is best to replace both at once and not have to come back to your mechanic multiple times or experience another failure down the line.


ASG has a 48k mile 4 year warranty on most repairs, so if you perform your repairs in groups or pairs, it will all be covered under one warranty and be equally reliable, granting you peace of mind as a customer and vehicle owner. ASG wants to keep you and your together as much as possible, so staying up to date on maintenance and being proactive in failed component replacement is very important. 

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