Bought a used 2002 f4i back in May. Rode it until last week when i noticed the rear tire had a slow leak. Upon closer inspection, I found a plug in the rear tire. The previous owner failed to bring this to my attention upon purchase. I mean come on, endangering my life just to get an extra 200 bucks out of me? :lame Well, I'm glad I caught it now before something bad happened. Those unforseen expenses really throw a wrench in your other plans.