DT installed my new set of LT285/70r17 AT3W tires today and they happen to only come in load E (118/121) range. Spoke with Falken via telephone and they advised to reference the industry standard tables. Found a pdf from the RMA entitled "Replacement Guidelines for Passenger and Light Truck tires" and figured it is likely a very applicable document. I'm a little confused though... Below is a transcription of the information, note that the load "E" only shows up at the very top of the chart, does that mean that max load is increased compared to lesser LT ratings but that inflation:load remains consistent through lesser psi ranges? Also, why would LT E tires have 118/121 index ratings listed on them if 118 is equivalent to C and 121 is equivalent to D?
Trying to understand this document for general understanding as well as future applications. DT has 44psi listed as the recommended pressuer on my current setup which jives well with what I've read anecdotally online. FWIW OE is P237/75r17 index 108S with GAWR F/R 3750lbs/3850lbs. In other words, pretty much ANY pressure listed on teh lt285/70r17 chart would be safe; just a matter of tuning ride and wear characteristics...
PS: If anybody knows how to attach a pdf to this thread, I would be happy to do that!
Trying to understand this document for general understanding as well as future applications. DT has 44psi listed as the recommended pressuer on my current setup which jives well with what I've read anecdotally online. FWIW OE is P237/75r17 index 108S with GAWR F/R 3750lbs/3850lbs. In other words, pretty much ANY pressure listed on teh lt285/70r17 chart would be safe; just a matter of tuning ride and wear characteristics...
PS: If anybody knows how to attach a pdf to this thread, I would be happy to do that!