Thinking of going to a 1.85" front and 2.5" rear wheel (Woodys) for the 990 adventure. My main concern is with the 2.5" rear as its so much smaller than the stock 4.25" How does the narrow rear rim perform on the pavement? My main impetus for doing so is of course better dirt peformance and especially to be able to run a 120 or 130 rear tires, something that I should be able to easily find in central and south america when I need to replace a tire. In addition with the 2.5" wheel I can run dual rim locks as well. Just concerned that it might be a bit too squirrely on the pavement even with a 140 or 150 tire???? Anyone running a 2.5" rear I would appreciate your comments.