Tire width/rating on 37” tires

[DanoHB]

I am looking to get 37” tires with my new 3.5” lift. The shop advises to get a “D” rated tire and not an “E” rated one for my 2020 JLUR. I want a 13.5” wide tire and was looking at the Cooper STT Pros. They are D rated on their 12.5” but E rated in their 13.5”. What will be the downfall to the E rated one? Is there something similar in a 37x13.5R17 tire that is D rated?

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[AnnDee4444]

Generally, the higher the load range, the stiffer the sidewall. Here's some more info: https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=55

 

[Remmy]

Also heavier with all things equal.

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