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Yeah have a look through the last 2-3 pages of my project thread.
On the standard cup cylinder.
If you want an equivalent braking effort from Wilwoods you need 300mm discs and more aggressive pads than you need with Brembos and 280mm discs. That made the choice for me quite an easy decision.
Yeah they're not a bad tyre, a little better than the R888 imo. But I'd go Dunlop, Michelin pilot sport cup first; although I haven't tried the pilot sports only read excellent reviews.
You can't compare the two...one is an ultra high performance road tyre MSA List 1A and the other is a road legal slick MSA List 1B. Try them both in the wet and then see what comes out on top. The AD08R is a great all rounder and it doesn't go off after plenty of abuse.
Anyway for all the posts...
Impressed with my Yokohama AD08R so far, great in the dry and wet although a bit difficult to get heat into when wet. If you want more performance in the dry then DZ03G are very good, get the hard compound rather than the medium.
What tyres were you overheating?
I used to run Federal RSR but found they needed too much camber to use them effectively. They are good all rounder though.
I swapped to Yokohama AD08R and they are better again. They don't go off as quickly, offer more wet and dry grip and aren't as sensitive to camber.
I've used more track...
Have a look at the catcams website and compare the group n cam figures of the 172 and 197.
As for the 197 cams, yes they offer a bit more overlap so if you run a twin scroll turbo setup you will see benefits
Otherwise as Mark has said, run the 197 inlet (with 172 dephaser) with the 172 exhaust.