If you are riding around on your bump stops, you can expect a rougher ride and in some situations it may be dangerous. Some VXer's in the past cut down the bump stops so as not to ride on them but offset wheels and/or bigger tires could cause the tires to rub the wheel well after performing this action. Go over some speed bumps and stuff at an angle and with some speed to see if the VX gets pitched around because of the extra stiffness. I figure the VX rides on the outer bump stop during hard cornering anyway, so I doubt it is a problem... but like everything else you read, take it with a grain of salt. I imagine someone on the board has some stock springs collecting dust, if it makes you uneasy, you could swap out perhaps. As a lame guideline, the VX in stock form sits with a rake toward the front - so the rear end is higher than the front.