I just looked it up and a 305/45/22 is a 32.8 size tire..... my guess is you have 265/70/17's at the moment which is about a 32" tire.... I think the 305/45 should be ok but It couldnt hurt to maybe crank your torsion bars in the front an inch. it would prob look better too... Id go with the 22 cuz they will still look great and the ride wont be too bad