They are 7kg front springs and 4 rears. Looking on yellow speeds site there is a load of different options.Michelin advises running them 36psi hot.
But end of the day they’re a road tyre, a true semi slick on a nice dry day you’ll be loving it!
Yeah see if you can get a stiffer spring.. you know what rates came with the yellowspeeds as standard ?
Harnesses make a massive difference.. one of the best mods I did
What would u suggest 9kg or more?