I did not have "rims" on my 1996 (identical to 1999) but I had two different sets of 31 inch tires. the first were mud tires which rubbed slightly in hard turns. The second (BF Goodrich All Terrain TA KO) never rubbed, and had a full diameter of 30.7 inches. So that is the number you need to know. You have at least 30.7 inches vertically. Unfortunately I cannot tell you about width, except that the tires I had were 10.5 inches wide (31x10.50xR15) I hope this helps.
Ranga!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Yes they do fit.
16 inch
no way
yes as long as it a 6 lug
Try: http://www.tirerack.com/
Yes
No thay will not, ford and Chevy are different.
Yes they would
No they will not fit, Tahoe is 6 lug and navigator is 5 lug.
yes, but it would look very stupid.
No they do not fit not without some kind of mod.