I doubt any manufacturer uses release agent any more, perhaps this will help explain it,
Bridgestone's official line is they dont use release agent and accidents are due slow speeds conering where there there is less load on the tyre so the trye not being forced into the tarmac, couple that with brand new smooth tyres = recipe for disaster, there is a thread on here from bridgestone about tyres from way back in 2010 but for some reason when I copy and paste it doesnt show up.
Bridgestone's official line is they dont use release agent and accidents are due slow speeds conering where there there is less load on the tyre so the trye not being forced into the tarmac, couple that with brand new smooth tyres = recipe for disaster, there is a thread on here from bridgestone about tyres from way back in 2010 but for some reason when I copy and paste it doesnt show up.