when it comes t vehicles, i know pretty much nothing....can i put 265/65/18 tires on my 08 titan? even though stock is 265/70/18....

Should be able to. Your local tire store can check tire sizes vs your available clearances. They will check it for you for free.

Whether it will rub or scrub anything or not. Judge.

Steven. Are you the serviceman in your avatar picture? If so I would like to thank you for your service to our country. We can live in a free country because of the sacrifices that the service men and woman in the armed forces make for our country. May god bless and keep you safe on your travels.

that is actually my son, i was in a long time ago, but thank you, ill pass that on to my son.

Thank you. Sometimes I don't think they hear it enough.

Or they hear it but it's insincere, people just think that is what they are supposed to say. I THANK YOU AND HIM with the utmost respect and sincerity, and I know for a fact dandyoun does too. I don't know if he has been deployed to the Middle East but trust me, I know how it feels to have a son "over there" in harm's way.

Oh, and your question.. it's only a little bit shorter profile, or aspect ratio. You will be fine.

A good place to learn how to read a sidewall is: http://www.edmunds.com/how-to/how-to-read-your-tire.html

folks...I am SO SORRY...really do not know how to read a tire....apologies all around....new it had to be a silly thing~ from the land of Bias-Ply--and butyl rubber~

did a quick search for you on Titantalk.com(Great Resource for Titan Owners) and that size should be fine for your vehicle.