You said "reinstall the game", not your entire computer
Or just install an other version in an other directory. A lot of people have multiple installs to be able to use other apps (slickmod, smokemod, ghostcar and so on) and to test stuff.
You did not use any crack? Cracks can do strange things and make games look bugged. (i don't expect an other answer then no, but if it is yes you could save us some time thinking about what it could be).
I no why the tyres deflate a ton of nails fell out of my caravan while caravan racing last week and the blackwood marshels never cleaned them up so my advise now buy some run flat tyres .
can cracking do that sort of thing? i wouldnt do it anyway, its dis honost, like 3 people made the game didnt they? seriously who would steal from a 3 man project, i know its very succesfull and everything, but its only $55 or so aussie dollars so its not that much why would you bother stealing it? oh and btw i get S2 soon i think