Just curious as to what an '05 will fit in stock form...

Tire Rack says 265/70-17.

Ryan

I saw that, but mom's new one is rolling 305/40's on 22's and she wants to go back to stock size so I'm trying to figure out if the p/o had to lift it to put the current rolling stock on...

i don't know, but the answer may help your search....

is the front end the same as an 05 f150? i my head, i think the body looks different, but does anyone know if the suspensions, etc are identical?

1970Custom said:

I saw that, but mom's new one is rolling 305/40's on 22's and she wants to go back to stock size so I'm trying to figure out if the p/o had to lift it to put the current rolling stock on...

Click to expand...

265/70R17 = 10.43"W x 31.61"D x 99.29" Circum (7.30" Sidewall height)

305/40R22 = 12.01"W x 31.61"D x 99.29" Circum (4.80" Sidewall height)


Other than the width increase of 1.57" the tires are identical in diameter, so have no effect on the speedometer reading etc. The tires on your moms Navigator were just "Plus" sized.

www.dakota-truck.net/TIRECALC/tirecalc
www.tirerack.com/tires/tiretech/techpage.jsp?techid=25&
www.discounttire.com/dtcs/infoPlusS...yXHh2jKbTlymCqTN0113cH!1876750479!-1254171448

It appears the 265/70R17 were OEM on the Ford Expedition, the Lincoln Navigator came with 255/70R18 OEM

255/70R18 = 10.04"W x 32.06"D x 100.70"Circum (7.03" Sidewall height); Therefore the current tires & wheels on your mom's Navigator are 0.45"D Smaller and 1.41" Smaller in circumference than the OEM tires & wheels, resulting in your mom's speedometer being off 1.42% High.

Okay thanks...

Eric,

I added more information to my original post.