A wider tire looks cool but they don't do twisties very well,, On rear wheel alignment it will effect cornering more than straight line... Go around 60mph take hands off bars,, see if bars shimmer. You would be surprised how many bikes are out of aligned. I have a lazer tool if you want to check your rear wheel.. I'll be around Saturday if you want to come down for a Free check. Then post your thoughts.. Not saying your tire is not the problem, But when you see how this tool works you will understand what I'm talking about. I showed the service manager at ASK in Columbus how far off the rear wheel alignment was off on two New bikes in the showroom, he was at a lost for words.. The marks are not always right on the swing arm..