Front Suspension Strut problems of the 1998 Toyota Sienna

At all times when applying brakes they would make a high pitch/grinding noise. Did not affect stopping. Took vehicle to dealer, and was informed that entire braking needed to be replaced. Consumer was also informed that replacement parts are defectively designed, consumer stated that the backing plate is too thin and defective. Left front rear wheel lug nut was cross threaded. Knocking noise from the right front when going over bumps, dealer replaced strut mounts.