Photon Cloud parenting instantiated gameobject

Hi! My problem have no answers in internet and forums, I did't find any. Help me, people!

When starts game scene, I instantiate player car, that is composed of 4 objects: car base, car body, car back and car wheels. Player car on my computer is ok, it's parts are childs of base, but other players cars have only car base objects exactly, other parts have null parent. I tryed instantiate, photonnetwork.instantiate, rpc calls. Nothing solve my problem: car parts have no parent. Any ideas?