Hi Timpo, well at the moment no one has yet got their hands on a 2008 Tenere, and none of those with an XTR at least in this forum have (to the best of my knowledge) increased their rimsize (err... matron!!) to 18".

I would assume -with much ignorance on the subject- that increasing to that particular rim size would result in issues with the rear tyre fouling under heavy load with the top of the undertray and even with the cans, as someone discovered when fitting larger tyres let alone rims. Having said that we will have to wait and see what the Tenere can handle before we are able to make a judgement.

Cheers