You should be more specific on what you are planning to do: are you looking for mountain roads, do you want to visit museums, are you looking for spending a few days in the same place or you plan to keep moving.I think there are some museums or touristic sight-seeings that you should never miss if you visit Romania, but all depends on your interests.Also we can give you some tips about restaurants/things you should try to eat/drink.
The low suspension of your car should not be a problem, as long as you keep main roads, but is always good to have an eye on the road and to pay attention. Ideally will be to avoid August, as being quite a busy period, causing traffic jams and agglomeration in hotels and restaurants. Also to remember that starting from July till end of August usually the weather may be quite hot, but I think you are aware of this.
You will be able to communicate in english in all cities, so you should not worry about it;there is a zero limit for alcohol while driving, which is different from western countries.Despite old legends, I suggest you never to try to bride any police officer or any authority, as you may get into bigger troubles.For any emergency, you can use the number 112.Credit, cards are accepted in all places where the visa sign is displayed, but there are some places where cash is preferred (bars, clubs, etc.)
Oradea despite being a frontier city, it has a very nice center refurbished in the last years/near you have the spa's with thermal water at Felix
Cluj-Napoca is one of the biggest cities, very dynamic, also famous for it's university (quite a few museums to see if interested)
to have in mind the salt mines at Turda(near Cluj)
Alba-Iulia- historical city(it has a nice citadel)-for us is important as being the city where the Union act of Romania has been signed in 1918
Sibiu- a nice Transylvanian city, very nice center(you will feel the german air here)
From Sibiu you can get to Transfagarasan- a route built in the mountains during the communist period to ensure alternative road to Transylvania in case of russian invasion
Brasov is one of the most representative cities from Transylvania as well:
On the road to Bucharest you have as well Sinaia and the famous royal Peles castle
Bucharest is the capital, and for sure you can find everything you may want........architecture(has been named the small Paris),museums, restaurants, old center nigh life, ........but if you will get there for sure you will meet BMW community members to guide you.
This post has been edited by Eugen B: 15 February 2017 - 20:06