After several months of messing around, I finally got my new wheels on the bike and got a chance to take it out on the road this evening for a short ride. I built a 17" x 4.25" wheel for the rear and a 19" x 2.5" wheel for the front. Silver Excel rims. Stock 950 hubs, rotors, cush drive (got them from Munn Racing via the KTM Talk web site.) Buchanan Spoke and Rim built the wheels using their stainless steel spokes and nipples. For starters, I mounted V rated Tourances front and rear - same size as on the BMW GS - 150/70 R17 on the rear and 110/80 R19 on the front. I used heavy duty tubes. I plan to put Amerseal in the tires, but haven't done this yet. I haven't added up the total cost but it wasn't cheap. The hubs, rotors and cush drive were in the $400-500 range. Buchanan charged a bit over $800 for the rims, spokes and building the wheel. The tires and tubes came to over $200. Total cost in the range of $1500. I just got the wheels on the bike this evening just before sundown so I couldn't take the bike out and really test the new wheels out. I did get around 20 miles in and can say for certain that the handling of the bike is quite different and is pretty much what I was hoping for. The bike feels like a street bike, which is to say it feels more stable and solid and has more grip on the road. Small bumps and grooves and holes in the road don't push the front end around as much as with the skinnier 21" wheel. The head angle is a bit steeper so the bike turns a bit easier. At slow speeds the front is less inclined to go in a straght line and requires a bit more attention, but this is relatively subtle and not annoying, just different. The precise scalpel like sensation that the 21" wheel creates on the front end is gone (too bad) but the positive is that the front end feels much more sold than before without feeling dull or unresponsive. Based upon my very limited experience, I am quite sure that this arrangement has made the 950 a significantly better street bike. I will do more testing and report my impressions once I have had a chance to put on some miles. I haven't had a chance to take any pics, but I will post them when I get the chance. I took the stock wheels and mounted some Karoos for off road use. I'm going to try mounting some TKC80's on the "street" wheels some time in the future (they will the be same size tire that all GS off roaders know and love) and will try them out off road. It will be interesting to see if this combo will fit the bill for long distance adventure touring in the same way that it has in the GS world. More later.