Deestone makes trailer tires yes but these are not it yes they will ride rougher being they are a biased tire once they warm up get smoother. Every bit of research ive done on these even gone as far as called the company that sells them. The problem with firestone tires is they are overpriced as well as the fact that if you get them into any mud they might as well be slicks. I had them on my dually f350 2wd and got stuck in my driveway after a rainstorm. IMO not wasting my money on them again.
As far as tire pressure id run mine on the high end at 65 psi but thats just me im driving very short distances on account of the condition of my current set of tires.
