Why my toyota shake when driving 90km/hrs?

There may be unusual tire wear. It's best to rotate and balance tires every 10,000 km. A contributing factor to unusual tire wear is worn struts.

. Tires or wheels out of balance or out of round.

. Wheel bearings loose, worn, or out of adjustment.

. Struts or suspension components worn or damaged.

. Wheel lug nuts loose.