I bought a pair of Michelin Pilot Sport 5's for the rear aftermarket wheels of my '68 a few weeks ago........and Michelin seem to make the different tyres very confusing. Current models seem to be Pilot Sport 5......then we have Pilot Sport 4 which is an earlier model (but seeming there is a new 'S' version of this. Pilot Super Sport tyres seem to have been around for a few years (and in the 335/25/20 size) - and then there seems to be a 'new' version of this now......perhaps not called Super Sport. Its all rather vague and rather confusing.......