Taken from the official site.....

Circuit open to the public:

Saturday, 17:30 until 18:30 h Touristenfahrten, 10.10.2009 (Nordschleife)

Sunday, 08:00 until 18:30 h Touristenfahrten (Nordschleife)

Monday, 17:15 until 18:30 h Touristenfahrten (Nordschleife)

Monday, 17:15 until 19:00 h Touristenfahrten, 12.10.2009 (Grand-Prix-Circuit)


No mention about monday morning / daytime on there so circuit possibly closed?

Racing:
Friday, 08:00 until 18:00 h RGB/ADAC-Rundstreckenrennen (Grand-Prix-Circuit)

Saturday, 08:00 until 18:00 h RGB/ADAC-Rundstreckenrennen (Grand-Prix-Circuit)
Saturday, 08:00 until 17:00 h BMW DE Challenge 7 GLP 7 (Nordschleife)


Sunday, 08:00 until 18:00 h RGB/ADAC-Rundstreckenrennen (Grand-Prix-Circuit)


Racing:


They have the F1 circuit shown for monday evening open to the public...


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EDIT: just found out that Mike Wright (pascal77uk on CGTI) is racing there on the sat:



Have met and watched him racing at Pembrey, he is also spending many of his hrs making some custom bits for my mk1, a top bloke .

He is driving a LHD car at the Ring (trying to get info on it to keep an eye out).

This is his UK race car:
http://i86.photobucket.com/albums/k111/pascal77uk/digital016-1.jpg

http://img.photobucket.com/albums/v90/fthaimike/Pembrey%2011-05-2008/DCP_6632s.jpg

Might be worth popping down to the grand prix circuit for a lap on monday be something different to do , plus the theme parks now open with the new museum , plenty to keep us ocupied before the tracks open .

Deffo worth a lap or two i reckon.

I wonder what the price normaly is for the GP circuit?