Originally Posted by TMT
Was there a question here to me?
I'm not sure.
Thanks for your help.
Yes. The question was: What was the original tire size on the trailer? Overland63 thinks they were either 7.00-15's or ST225/75R15's.
But I'm not satisfied with that answer because a 7.00-15LT has a load carrying capacity of 2040# at 65 psi, while an ST225/75R15 is 2540# at 65 psi (Both Load Range D)., while an ST205/75R15 LR D's is 2150# at 65 psi.
Originally Posted by ROBERTSUNRUS
Hi, on this link, the tires are listed as a "P" tire and described as light truck tires???????????
There are passenger cars and there are light trucks, - AND - there are Passenger car tires and LT tires - BUT - in the cross over, there is a mix. Large PC tires are used on light duty light truck vehicles - hence the description. (But it never occurs that LT tires are used on PC vehicles)
To eliminate the confusion, it is common to use the phrase "P metric" and "LT metric" when describing tire sizing. P metric tires come in "Standard Load (SL)" and Extra Load (XL)", while LT tires come in Load Ranges (C, D, E, etc.) although you will hear people say "ply", as in "6, 8, or 10 ply" (where 6 ply rating = Load Range C, 8 PR = LR D, etc.)
Those 2 types of tires are quite different - and as has been pointed out, in order to use a P type tire on a LT vehicle(which would include trailers) the load rating has to ben decreased by a factor of 1.1.