Spacer for Prado spare

Hi all

I have searched the threads (I know i have seen it somewhere before) but for some reason can't find the answer.

What have people done when they have fitted 265/70/17 to 120 series prado so the spare fits? Toyota have fitted them for my newie which i pick up Saturday but are unwilling to make a spacer for me due to warranty issues. Is there an off the shelf spacer or do i make something out of teflon? If so how thick does the spacer need to be?

Cheers

Terry