2001 toyota camry LE vibrations as idle

Hi there



I recently bought 2001 toyota camry LE with automatic transmission at 70000 miles. I feel little vibrations while stopping at red lights. putting in neutral or parking doesnot change it.



the vibrations are very small at this moment but it still bothers me.



what could be the reason. All the spark plugs were changed at 60000 miles by the previous owner.



I am suspecting engine mountings, but are mounting supposed to go bad at 70000 miles or 6 yrs. Or could they just be loose?



thanks in advance