why don't nfs spoilers? just detach it, then hide, then press ctrl + a(select all) then press delete, then unhide all
save it, then you can merge or import it in any scene
it isn't hard
if you buy a computer for the near future 4 gb is enough, but for the 'far future'(?), maybe it isn't enough, for example gta 4, starcraft 2, diablo 3, we don't know how much ram will those needed
because if i compress the file in one rar file, i can't upload here, because the upload limit, so i compress it 1.95 mbyte in pieces, try to delete one the rar file, than you can't decompress it, and can't use the file what is in that, it's that simple
yes, jj is using blender(if i know well) here you can find a good video tutorial of the basics, of the rim/tyre modelling(016 - tyres -> here you can find it)