Replacing tires

[sinezz]

should I replace all 4 tires if only one has lesser tread...

[E36matyac]

If the other 3 are good, then just replace one....... unless you have money to burn, or if the car is XI, then its not good for the AWD system to be more than 2/32nd's difference between all tires.

[sinezz]

Thank you. I have been given varying advice.