NOOOOOO
There is no way in hell you are fitting a 28" tire thats 12.5" wide in a stock tub, unless you have crazy backspacing and the tires stick out like 4 inches. You cant do it on a stock tub. Mini tub, plus what are actually trying to do with the car that requires that big of a tire? a 28x10.5 will do just fine if your looking for a 28" tire. Better off with a 26"