Travel Trailer Tire Choice

katoom400 wrote:
AT 7500lbs GVWR, my trailer should be more than fine with D Range tires @65PSI

My question is: Since it is only $6 more per tire, is there any drawback to going with E (10 ply) tires? Overkill? maybe! but for the price of a 12 pack of decent beer why not?

Your 7500 gvwr trailers tires may have 1600-1800 lb load per tire now add a good 10 percent reserve capacity = 2000 lbs per tire.

Just a comment here but at some point more tire on a trailer isn't the best idea.
If you think a load E tire at 2830 lb capacity is a good idea then another upgrade to a 16" load G tire at 4440 lb capacity would be better ? Not trying to be a wize azz but justy making a point.

For years the website wanted a tire engineer to help out with tire questions. WE finally got what we needed in members CapriRacer and Tireman9. Both have offered lots of input for new folks with tire questions for their trailers.
For your question is a load E better than a load C or D check out Tireman9 rvtiresafety.com thoughts.....
http://www.rvtiresafety.net/2013/10/will-you-increase-load-capacity-with.html

and for those that derate a over size tire on a trailer with low pressures.... this about inter ply shear forces at work on trailer tires
ply shear

and his home page has lots of input about tires for a trailer .....home page

CapriRacer........see Barry Smith blog or over on allexperts.com website where he answered same type question about tires and trailers.