Another tire question!

I ordered the last set from Coker. They are stamped Firestone on the sidewall, but not made by them anymore. Coker bought the molds. Same tires that came on it when I bought it. Spare is blackwall, and probably an ST tire. I see in my manual that the tire size is R205 x 14, although I'm not sure that is what the repro tires are. Trailer is in storage now so I can't check it out. As previous poster said, trailer is only 1800 lb. unloaded. So, if I decide to keep the vintage look I'll have to stick with a car tire, or I can go with an ST and not carry whitewall cleaner with me anymore. No problems with sway or anything with what I've had on it.