I buy and sell 4th gen wheels. There IS a difference in RAM wheels some crack way easier than others. Most Gen 4 wheels I have seen no problems with other than when they have hit a big pothole or curb. However the thinner spoke Dodge wheels and RAM Sport wheels are the ones I have been seeing them crack. The bigger spoke wheels I rarely see unless as stated above. I only sell 20s so I know little to nothing about 17s rims.