78 -13ST tire size

[Arkman]

Does a B78 -13ST tire size = ST175/80D-13? All I could find on my tire was that number, so far it looks like it is the same as a ST175/80D-13 tire.

Is this correct?

[Jeff-in-PA]

Vintage Tire Conversion Chart RADIAL REPLACEMENT GUIDE
Size Load @ 50 PSI New Size Load @ 50 PSI
SPECIAL TRAILER SIZES/LR-C
B78-13ST 1315 lb. ST175/80R13 1360 lb.
C78-13ST 1410 lb. ST185/80R13 1480 lb.

F78-14ST 1710 lb. ST205/75R14 1760 lb.
G78-14ST 1865 lb. ST215/75R14 1870 lb.

F78-15ST 1710 lb. ST205/75R15 1820 lb.
H78-15ST 2035 lb. ST225/75R15 2150 lb.
SPECIAL TRAILER SIZES/LR-D
H78-15ST 2370 lb. ST225/75R15 2540 lb.


I got that info here http://www.cerka.ca/catalog/TIRESIZE.asp

Jeff

[Arkman]

Thanks Jeff. That helps. Hopefully I can find some decent tires that wont break the bank.

[Arkman]

All I was able to find in town is a load range B tire. Mine were load range C. I believe it is rated to 1150 pounds. I'm assuming that should be more then ok since my boat weights less than that. How does that work with the tire weight. Is it figured that you split the weight between the tires? So a set of 1150 pound tires can carry 2300? Or is it just that...1150 pounds for your trailer.

[NYBo]

The load rating is per tire.