Yes I had a similar problem when I bought SM wheels for the ADV accept my problem was a lot more serious as i sheered of the rear caliper whilst riding............................Hi - old duffer here
narrower front - no point.
You want a 2.5" rear which takes the 140 tyres nicely and makes tyre changes a lot easier. Improves grip off road as well.
There's a post on here somewhere all about mine and the problems I had (spacers!)
ummm and what does that actually mean? lol that it is better or it isn't?Not on here - on ADVrider
Oh, and the front is only pointless..............if you don't have one
I'm assuming you'd stick with a 21/19 setup? as I've seen a 21/18 setup or is that due to tyre sizes?The oy reason I know of to change the front rim is becasue the standard KTM rims are soft and easily bent - although I haven't bent mine yet.
You would change it for the same size anyway - but a stronger excel rim and possibly a fancy orange bling hub I don't think the new rim would affect handling or grip at all.
The rear is changed for a narrower rim 2.5" to allow the more off road tyres to fit properly. if you look at a D908 type tyre on a standard rim it is very flat, the 2.5 rim allows it to be curved.
The traction with the 2.5 rear rim is a lot different. it seems to throw a lot of dirt up now and flings stones and rocks at anyone behind me ......... I think on a hard packed surface the wider standard rim and wide tyre offers more grip, the narrower rim can't dig in.
On a softer surface the narrow more rounded tyre digs in better.
I have found the rear much more controllable - the throttle control is better for finding the biting point on the edge of the traction .......... does that make sense?