strut life on 1999 Toyota Avalon

at what mileage should front and/or rear struts be replaced

Asked by for the 1999 Toyota Avalon
It's hard to put a mileage interval on the replacement of these, they are replaced when they are worn out. You could see this occur at 60,00 or 160,00 miles, depends on the quality of the part, the type of driving and road conditions and type of vehicle. I've seen struts on passenger cars like this go for 90,000 miles +, so that is about where I would start considering normal replacement.