Tyre suggestions.....

I've got a pair of Rennesports on the 900 - the rear is almost worn out but the front still has plenty of life.

Any suggestions for a replacement for the rear which would compliment the front - could do with something with a bit more tread as 1/ I don't go anywhere near a track 2/ winter is a coming 3/ will last a bit more than 3000 miles.

Sizes are 180/55 on the back and 120/70 front.

Cheers

G