questions about stock Navigator rims and a few other things

[petekf4qoe]

I am about to order new tires for my 2005 Lincoln Navigator Ultimate and was wondering if a 285 / 65 R 18 tire would fit the stock rim ok. It has 255 / 70 R 18 on it now. I am planning on ordering these in a day or so and I want to get a performance tire not a all terrain or mud tire. The 255 tire is 10.039 inches wide and the 285 tire is 11.22 inches wide. So we are talking only 1.181 inches wider. Not much in my opinion. I think it will look good with these on it but want to make sure. This truck is a 2wd truck and will never be off road. I plan on making a Cobra/Gator out of it.

I am also wanting to know how hard it is to lower my gator. I have read that I can adjust the ride height sensors to lower it. how does this affect the truck? how does this affect the air ride system? Is it harmful to the system or truck?

Does anyone know of a reasonably priced cold air intake for this truck? What upgrades have any of you guys done to your Gators to help the performance / mileage?

I plan on adding a blower to it sometime in the future, but for right now I want to go this easier cheaper route. A cold air intake, programmer and what ever else will help with the power and MPG's.

 

[petekf4qoe]

come on guys no thoughts yet.

 

[rays brother]

I dont see a problem with a bigger tire. I have a 05 navi also plus an 93 mark viii. i had it sensored lowered and then a ray switch put in. but when i sensor lowered the mark there is no problems with it at all.

 

[1badd7]

as far as performance and mpg's you should really consider doing and exhaust system, cat back is ok but you should really consider going to a shop and having a manifold back system done and getting rid of the pre-cats. try to find a shop that does mandrel bends. our 32v motors really like to breath. also stay with a good brand intake such as k&n i've used several and i've always been happy with the k&n's and dissapointed in others

 

[petekf4qoe]

Hey Rays brother, I was wondering what you were talking about when you said you have a ray switch? What is this?

Also is this the same way you would lower my 2005 gator? It is showing how to lower a Lincoln Mark VIII. Is this the same? If not can you or someone else point me to directions on how to do it on my truck?

 

[KSnav]

pete
stock vs new, will be wider & shorter
Sidewall 7.0 6.7
Radius 16.0 15.7
Diameter 32.1 31.5
Circumf 100.7 98.8
Revs/mile 629 641

Speedo 1.8% too fast, read 60 actual 58.9