Well I put my Delkevic 17" Tri-Oval on today, aside from getting a hernia trying to lift the Potato launcher into the old parts storage area It was no muss, no fuss. I can attest that my bike neither drives slower or nor stops quicker but lifting the new one up to put it on was a lot easier but it is somewhat louder, that disappointed me.
Of course it makes more sound than the spud launcher.
