I have been googling away the past week trying to get a decent snap shot of the brands of semis slicks used these days. I have not considered the likes of the Federal 595RSR as a semi slick, though they are a very good tyre.
Their are loads out there and in the 17" diameter range you seem able to get them for $300-350 a tyre vs the $550 that Yokohama and Dunlop wants for their tyres. (I have used a 255/40/17 as the baseline tyre for comparison)
So I have not gone into huge details, just the brand and links. If people have used any of the more obscure models then be great if you could post feedback or results of any decent OS tyre tests you have come across.
Dunlop
DZ03G
Dunlop DZ03G Link
Comment - Seem to be recognised as almost being as quick as the AO50, but like all Dunlops good in the wet and quiet.
Bridgestone
RE55
http://www.bridgestone.com.au/tyres/motorsport/RE55s.aspx
Comment - Still decent enough things though really need to roll out an update. No idea what is happening with the RE-11S
Yokohama
AO50
http://www.yokohama.com.au/motorsports/
Comment - Almost the track day standard tyre in Aus. Great grip but grossly expensive at ~$550
Nitto
NT01
http://www.nittotire.com/Tire/nt01#size
Comment - Seem insanely cheap at $350 a tyre
Michelin
Pilot Super Sport
Michelin Motorsport page
Comment - Said to have almost Pilot Sport Cup level of grip
Pilot Sport Cup
Micheline Pilot Cup site
Seem to be the rage for the best road tyre you can put on fast track/street cars
Federal
FZ-201 & FZ-202
http://www.federalmotorsporttires.com/index.php?page=fz-201
Comment - Up around the $500 a corner and not a great range of sizes available.
Kuhmo
V70A
http://fsport.com.au/kumho_v70a.html
Seem to be used a bit on control tyre circles
Toyo
Proxes R888
http://toyotires.com/tire/pattern/proxes-r888-high-performance-competition-tires
Seem to be better at shorter events like hill climbs where grip is there from near cold
Hankook
Ventus TD Z221
Hankook Motorsport page
Comment - Seem popular in the US. AO50 type money and look to be of equivelant performance to AO50 for sprints
Silverstone
FTZ Sport Type RR
Dealer link
Similar pricing to Nitto, ~$250.