Definitely. Tires pull to the side and two identical tires pull against each other equally. It is unrealistic to expect a car to go straight with mismatched tires. That applies to all older computerized alignment equipment but if the tires have the same circumference and width, the car can still be aligned. It is the suspension system that is being adjusted, not the tires. Understand that the alignment will address tire wear issues and can make the steering wheel straight, but don't be surprised if it doesn't go straight when you let go of the steering wheel.
Newer aligners that use wall-mounted cameras can take mismatched tires into account. The car may still pull after the alignment, but the settings will be correct after four new, matched tires are installed. The camera alignment systems are the first in the world that do not require the car or hoist it's on to be perfectly level, in fact, with the right adapters, the car can be aligned with NO wheels or tires on it. This technology has only been around for a few years.
I preferred to align cars just before people bought new tires so I could "read" the tire wear. That helped me to be sure I was seeing anything that needed correcting.
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Tuesday, November 23rd, 2010 AT 7:07 PM