Id like to put spacers on my tires. Bigger ones in back and smaller ones up front. Id like to know if that's as easy as I think it could be...sounds to me an analogy would be as simple as putting an extra washer on the bolt..is that the basic idea? Seems to be you would just put a plate space of desired thickness on the four bolts holding the wheel on? Any tips or advice or possible negative outcomes or issues would be appreciated. Thanks.