Not many:
Super Active: (Checking them all the time)
www.lfsforum.net
Active:
www.liveforspeed.forum.pl
Not Active: (I dont really check them)
RSC
Some other virtual tuning forums that I forget names of them.

Quote from Ryanry64 :

Here, SomethingAwful and RSC.

And slightly less occasionally the Bizarre Creations forums

Goony goon goon!

Quote from Fragmatic :

Goony goon goon!

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