Get your tyre pressures right to prevent premature wear. Pressure should rise 10-12% when hot from their cold setting. If it rises more than this, raise the cold pressure as the tyre is moving about too much and generating too much heat.

If you're grinding things off the bike you are not hanging off enough!

Fit rearset pegs or make a bracket to raise the standard ones (I used a bit of steel about 3 inches long between the bottom mount and frame, causing the peg to rotate up and back around the top bolt).
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball