Yes the Pro Tracs are bias ply, but it sucks that the wording on the sidewalls differ from the originals and are not done in RWL...they're all black. Same issue on the L60 where they also changed the tread pattern on the 60's. Likely to do with licensing or an effort to avoid paying royalties of some kind?
Below are pics including the newer tread pattern L60's, then the L60 Originals with RWL, then the newer N50 tires with black sidewalls. I wish when they'd repop tires that the companies like Coker would keep the designs and wording the same???
Repro L60 with newer tread pattern and black sidewalls
Original L60 Raised White Letters and Original treads
Repro N50 with original tread pattern and black sidewalls