A friend of mine had a Corvette for a while, and would always use the line "The Vette gets 'em wet".
So I responded with "But the Zed gets me head!".
The citroen AX gets me Sex......
They never rubbed with vredesteins
they barely rubbed with pilot sports (similar to what you describe)
they rub horrifically with pirelli prosso's
tyres shape makes a big difference
well they are on the way but in the mean time i need to run a west midlands meet and can't do that with rubber being shaved off.
Who'd have thought that pirelli prosso's are 2 inches wider that vredesteinUS's for the "same size".
i ran around testing roads for the next west mids run and ended up ruining my eyes like rubbing gravel in them.
waiting for the piriton to take effect.
and if one of the bolts does shear on the cats while working on it, the removal of the remainders of that bolt could well ruin the cat... i say this from experience.