I have those wheels on my 54 3100..with 245/60/15 on the front and 275/60/15 on the rear.yes it is a work out to steer at slow speeds ie in parking lots and parking in general. But good the rest of the time. You should be a little better off with the 75 series tire for steerability.the tire sidwalls will stretch abit to fit those rims but look ok. I ran and wore out a pair of 245/75/15 on the front before I went with the 245/60s. I have seen a 6.5-7" aftermarket rally rim 6 stud...if you could find those that would work well on the front. Did you get the beauty rings and center caps as well?