2 added 537 characters in body
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Not at all, in fact there are many occasions when you would want the tires at an angle to the body of the car. Any time you're parked on a hill it is prudent to angle the wheels of the car so that if the parking brake failed to hold the car would run into the curb.

If the wheels were aligned with the body when parked on a hill the car would be free to roll down the hill until it collided with something. That could be bad…

One more thing: if there is an increased load due to the wheels being turned, it is likely to be far less than the load imposed when the wheels are turned in normal driving (as then the car is turning and moving with forces imposed both by bumps and the act of turning). So even if the driver informing your uncle is correct about the load, it is unlikely to have a significant impact on the life of the vehicle – not to mention needing to balance that impact against the impact of turning the wheels while the car is stationary.

Not at all, in fact there are many occasions when you would want the tires at an angle to the body of the car. Any time you're parked on a hill it is prudent to angle the wheels of the car so that if the parking brake failed to hold the car would run into the curb.

If the wheels were aligned with the body when parked on a hill the car would be free to roll down the hill until it collided with something. That could be bad…

Not at all, in fact there are many occasions when you would want the tires at an angle to the body of the car. Any time you're parked on a hill it is prudent to angle the wheels of the car so that if the parking brake failed to hold the car would run into the curb.

If the wheels were aligned with the body when parked on a hill the car would be free to roll down the hill until it collided with something. That could be bad…

One more thing: if there is an increased load due to the wheels being turned, it is likely to be far less than the load imposed when the wheels are turned in normal driving (as then the car is turning and moving with forces imposed both by bumps and the act of turning). So even if the driver informing your uncle is correct about the load, it is unlikely to have a significant impact on the life of the vehicle – not to mention needing to balance that impact against the impact of turning the wheels while the car is stationary.

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source | link

Not at all, in fact there are many occasions when you would want the tires at an angle to the body of the car. Any time you're parked on a hill it is prudent to angle the wheels of the car so that if the parking brake failed to hold the car would run into the curb.

If the wheels were aligned with the body when parked on a hill the car would be free to roll down the hill until it collided with something. That could be bad…