A few tire questions for you guys:
I looked in the FAQ and only found largest useable for stock and with each lift stage... I was going to get some larger tires, but if I can only fit 30's with out lifting, I'll wait to lift.

-30" tire with no lift
-31" with cranked bars (approx 1")
-31"-33" with 2"-4" lift
-33"-35" with 4"-6" lift

-Stock 15" rim:
-How wide is it?
-How wide of tire can be used?

-How do you know how wide of tire can go on how wide of rim?

-Tire sizes:
Is there any conversion between the two ratings of tires?
ie. 235/75/15 = 29"x8.5"x15" << Just made those numbers up for an example of what Im asking for... these tire sizes are not equal!!

Maybe should stick some of these back in the FAQ as well as thats the first place I went to look even though they are not Dakota specific.

Thanks guys.

 

The stock rims are either 15x6 or 15x7.

As a general rule you shouldn't use a tire that is more than 4 inches wider than the rim. Athough, if you have really tall sidewalls, it doesn't matter. For example, Crazy4x4RT has 12.5 inch wide tires on factory rims, but they have a really tall sidewall.

The conversion is the first number is the section width in mm. The second number is the sidewall height as a % of the first number. The third number is the rim diameter.

Example: mine are 265/75/16. 265 mm is 10.43 inches wide. 75% of 265 mm gives it a 7.82 inch sidewall hight. Then, you double the sidewall height and add the rim diameter and get a total diameter of 31.65 inches. Also remember that the exact size is different by brand, so my tires are somewhere between 31.5 to 32 by 10.5 inches.

 

Good info! Where is the width taken? at the widest part of the tire or at the tread?

 

Widest part of the tire.