Over here in the UK - tyres are pretty expensive and you learn pretty quick to take care of a full set - unless you have money to burn.

I wouldnt recommend ever bypassing safety systems that have been created for your safety on the road - its not just your life - its the other people who dont have a choice because of the decisons youve made - unless your on the track of course.

I would guess any warranty or insurance would be completely null and void from this kind of activity and I am not sure what your trying to achieve.