May sound weird, and forgive me for the fact that I may use unofficial terms or language, but here it goes: - My 2012 Nissan NVP3500SV (V8, 5.6L) has LT245/70R17E stock (from the dealer,, bought new). The manual says to use this same size as does the inside of the door jam. seems pretty straight forward, right? - Every tire website or dealer I visit now says that OEM is LT245/75R17E. Every time I talk to a living person, they reference some book that mentions the right size to be 75 and not the 70. So, wtf? Is my car a glitch? Did the wrong crap get thrown onto it out of the factory? is a 75 going to make any real differences? why does all current knowledge call for the 75 when the manual calls for the 70? can i follow the modern 75 recommendation or do I really need to stick to the door jam 70? 2012_NV_Passenger_Owners_Manual.pdf