the reason your engine tempeture went so high was you destroyed your radiator in the wreak and it wasnt getting any cooling to the engine. chances are it can be fixed, will it ever drive like it did? no, it will feel like you're driving a different car then you remember. also you will subconcisously know that your car was in a wreak and that will make you feel like its different also. If you do get it fixed i recommend going to a bmw shop also, not just a regular shop. It will give you the best chance of revival as thats what the specialize in. Looks to me that it wont be totaled but near it. hopefully the engine didnt get warped from running so hot, but all the accesories and coolant parts will need replacing, hood. fenders. bumper, and possibly some frame work could be done also. good luck and let us know what you end up doing, were a pretty good used car hunting clan around here. we can find you a decent ride.
so to answer your questions
it wont ride the same.
if fixed right it prob wont give you too many troubles, but it will more then if you didnt get in a wreak.
if it was me i would weigh my options. find out what your car was worth on the nada pricing site. that is the most accurate site around for car pricing right now. look at what cars are in your price range and go over to bimmerforums.com and look at the classifids there if you want another bmw. If theres nothing that you would like there then look into getting it repaired. I would look for another car before repairing however.
Last edited by saltshaker185; 03-21-2009 at 12:30 PM.