International rental ?

I am going to tenerife in early October this year and I am wanting to hire a bike for a day . The Wife has allowed me one full day from dawn till dusk to tear/cruise through the islands moutains and forests aslong as I dont moan about sunbathing or shopping for the other six days . Fine by me , she said she would even pay for it .
I was wondering if anyone has been to tenerife (Las Americas) hired a bike and done the same . Can you advise me of the price and location of any rental companies .
When I went to Rhodes the Island is much smaller then Tenerife and therefore you couldn't hire anything bigger than a 250 . I was hoping for somthing with a bit more grunt this time .
Any recommendations on road craft and keeping the local plod happy will be of great help too .

But most important is any good route recommendations , I'll do them on a hairdryer if I have to .

Anyone ???????

Try pming scuba1 (?) I think he lives out in Tenerife.