Anything in the Road Can Damage Your Tires, Including Tree Branches, Rocks, Construction Gravel, Tire Rubber… Anything. Keep a Wary Eye on the Road While You...
Anything in the road can damage your tires, including tree branches, rocks, construction gravel, tire rubber… anything. Keep a wary eye on the road while you drive to avoid running over things. The more time you have to react to something the easier it is to avoid it by changing lanes or safely driving around it.
Is it bad for your tires to park on rocks?
It will not harm your tires. Assuming these are traditional construction grade stones, they will not harm the tires. If they are unrefined stones collected by hand there could be a concern that the type of stone could have sharp edges, but this is unlikely.
Salt and inert chemicals that can get stuck under your car may react with water or temperature and cause further damage. Short-term parking shouldn't cause more damage than your regular use of the car, but it's always best to avoid parking on gravel in the long term.