Quote:

What advantage do they have over the biased ply slicks of the same dimension?


Less rolling resistance is the big advantage among the others I listed earlier. They are faster.

Jody Aberts 1966 Fairlane 427 Troublemaker2 AA/NSS 1964 Galaxie 500XL 390-4spd. 1966 F-100 390-C6 1967 Plymouth VIP 383-TF 2003 Roadking