Those tires will certainly keep you from floating away.
I love those tyres actually. They're usually on my spare XTR wheelset and go on my Obed when I feel like playing around in the city.
I'm gonna get some Big Apples for the Haro thing posted above, so I can fit a mudguard in the back too.
If you haven't tried the Apple (or Big Ben or Super Moto X for that matter) the diff will be night and day in weight.
@voxelwise started
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Those tires will certainly keep you from floating away.