Not an issue because all real single seaters are like that , it's not like an F2007 in GT5 I mean even the dozen time world rally champion from UAE crashed a 2008 Renault f1 car (with slicks) on a straight line
http://www.youtube.com/watch?v=gJpURLp4wYI&feature=youtube_gdata_player the F2007 in GT5 isn't the most realistic difficulty wise it's drive is similar to the Toyota f1 in the old GT but it's
important you know the 2010 regulations , it is very similar to 2009 regulations :
http://www.youtube.com/watch?v=zTkVKPdyWs0&feature=youtube_gdata_player but even a lot more driver involved
The 2007/8 regulations and 2009/10+ have a huge difference despite the UAE rally dozen time world champion crashing the 2007/8 , 2010+ is in a different level
The aerodynamics of the 2007/8 are a lot less turbulent but a lot more drag also which meant pulling out of slip stream to the dirty air , the car would not be just faster than the one infront , that's a reason why they made new regulations to see more overtaking and also too make the car's more driver involved also to see more dangerous maneuvers.
Starting with comparison the 2007/8 had wider and lower rear wing , winglet vains on the sides and mini skirts , flat wheel fairing , fat front tyres and the biggest which is double diffuser all to aerodynamically aid the driver. Gone for 2010. Completely but it's also sebastian vettel himself who helped on gt5's f10 to be virtually simulated.
Lastly it's important to know that gt5 with the most reputable and experienced simulator will have the details always in it meaning because a race car has that aggressive and tricky feeling then it will be in the cars too , mind you vettel is in the simulator when he is not on the track because testing and outside grand prix practices are limited because they only have a maximum number of engines per season and they last no more than 1500 km other than that reason it's reduced costs - advantage for the small teams
Truth of all though is racing car's will never be easy especially the top of motorsport which is F1