I have a NNBS CC and am planning on going with some Titan 18's. I'll be at a 2/3 drop, what tire size would you run? 18" is an oddball size to me so i have no clue what to get.

 

going with the same size you have now will work just fine.

just use a calculator to figure out what size you'll need with the new rim size

 

do you have any clue what size that would be? lol

 

275/65 on mine with ~32” OD...OE 18” was 265 ~31.5” OD.

Michelin’s LTX M/S2 isn’t sexy but manners and performance are excellent.

 

stock is 265/65-18. There is almost nothing in a high performance tire in 18" that is big enough for these truck. I had to go with 20s to find a tire.

 

As mentioned above, the factory went with 265/65 on their 18's, which come out to a 31.5" diameter. The factory put 265/70's on their 17's, which come out to 31.6" dia. I just put a set of 285/60 - 18 Cooper Discoverer HT Plus' on a set of the factory 18's and am pretty happy with them. That figures-out to be a 31.4" diameter tire.

I'm lookin' to do a 2/4 or a 3/5 Drop come Springtime...

Another option if you're tryin' to match the diameter of factory 20's is to go with a 275/65 on an 18" wheel. That comes out to be just about the same 32" diameter. FORD trucks with factory 18's come with 275/65's, but theirs is a 7.5" wide wheel. GM 18's are 8" wide. What width are the Titan 18's?