F1 any good?

[samd]

Anyone got a f1?are they any good as im tempted with a F109 and would put my 10.5 in.
I had a look at them on sunday at don valley sheffield and they looked shite to be honest, kind of put me off, no grip, but otherwise they look good on videos. Is grip a problem with these? I would have thought they would have loads of grip like a pan/touring car. The cars at don valley ran rubber tyres by the way, no additive.