My rear tire (Dunlop Sportmax D220ST) is starting to show wear bars, but the tire looks pretty good still. I've never run a motorcycle tire down to the bars (or beyond) before, so I don't have a good feel for how critical this is. I'm thinking that I can get a few more weekends out of this no problem... maybe 1,500 km or more. It has about 14,000 km on it now. Thoughts? Thanks!