No No CobraV8, sticky slicks and cheater DOT tyres have a soft rubber compound hence wear quicker, its the ability to adhere to the track that counts as a harder road compound tyre resists more and the reason why you get tyre squeal when corning hard, the softer DOT or slick does not squeal(so much) but is shedding rubber you can't see until its worn out, the very reason why V8 Supercars have tyre changes during races!! and as we know this comes at a cost, EG: need more tyres.
On older cars a quick speed fix is to add modern technology slick type tyres that can over come the older suspension systems but the flip side to this is a huge wear rate on the tyre, i would be 2 sec's a lap quicker around Hampton in the mustang but could shred a full set of slicks in a weekend, that's not cheap racing and only forces others to do the same!!
Too me it doesn't matter what the tyre is as long as all are on it but you also must use caution as the more serious racer may fit a new set every race to have that slight advantage(its been done) but at this stage one should question what they are at "Classic or Historic" events for, but some just can't help themselves! atleast Rays handicapping sorts these gentlemen out, LOL
Dale M