Ok so I decided to fit a Mitas Army rear to the XTR to match the Army front I had previously fitted.

although the trellesport site lists the Army rear as a 4.75/17 when I received it I saw on the tyre wall it was also sized as a 120/90/17, it's also rated as a 64M so a 80mph top speed. Also like the Army front it is none directional.

On first seeing the tyre I thought I was doomed as unmounted the beads it very close together and the carcass is stiff. It was nice and easy to fit by hand using only my MP levers and plenty of lube, I'd say almost as easy as fitting a 21" front. The bead was already seating by 10psi and was fully seated by 20psi so I nice tyre to mount on the road side although the gap in the beads may make road side repairs a pain.

ok so far I've put 100 road miles on the bike. As with the front when new it slides a lot and locks up very easily. I've used it in the wet already and it was a very nervous tyre with little grip, but the front was the same when new. Hopefully once it's had a few more miles on it it should grip nicely.

As with all tyres with large soft blocks it does wander around and gets upset after 60mph, but all this is starting to improve. there has been a slight change to the gear ratios with the tyre being a little taller but it's not much but you do notice it.

Hopefully soon i'll manage to get some dirt under the tyre and will upload some pictures soon.