I am just wondering if my dakota which is 2wd extended cab will be able to take 30x9.5x15 without a lift.

 

this is the tire i have on my back. its a 98 r/t and its dropped 2 inches and i still have room. i know for a fact i can put a 30 in on the back.
i cant however go any larger than 255/55 (28 in di.)on the front. but it gives me a nice rake that looks good. i also have 17 in rims so if yer goin on 15s then u gotta do the conversions.
click on specs and it will tell u all the tire dimensions. i was gonna go with a 30 in di. tire but there hard to find a good on.
http://www.tirerack.com/tires/tires....es&place=1

heres some good sites for tire sizing
http://www.dakota-truck.net/TIRECALC/tirecalc.html

http://www.miata.net/garage/tirecalc.html