Upgrade Tires

JJBIRISH wrote:
....snip....to unrelated verbage.....

.....That means that there is no downside to using a load range D or load range E in place of a load range C tire .
A higher rating is a higher rating ..:B:B:B....

Jack, there are many things you and I agree on, but I think I am going to have to go a slightly different path than you on part of this one. If my reading of the SAE standards are correct, and also based on a LOT of other reading and asking questions of some in the industry, I feel it is likely safe to say that we can substitute up to a LR D tire on a rim that is "certified" to carry a LR C tire. The key part of that phrase is likely, "did the wheel manufacturer certify the wheel meets SAE standards that are applicable".

Now then, to go all the way from a LR C to a LR E ( and more to the point, to carry 80 psi in this hypothetical case ) may in fact going beyond the pressure related design standard of the wheel. So on that part of your statement ( LR C to LR E ) I agree with you, not a good idea.

Fellas, I think the real deal bottom line of all this pressure related standards and potential failures is to, as always, do your homework, and know what the design standards are of your particular wheel ( and tire ). It does little good for me to state to you all what the standards are that my wheels meet, unless yours are identical.
I can say that in every single case when I have had correspondence with wheel and tire manufacturers, as well as trailer builders, when I ask very specific, carefully worded questions, I have always received equally clear responses from them.