I have a set on the exhaust on my coupe (both sides of the mufflers), they have been there about 6 years. Just recently, the clamps are allowing one of the offset mufflers to turn, which is also turning the tail pipe. it gives me an annoying rattle. It seems to take a few months before the tail pipe turns that 1/2" and begins to rattle again. The bolts are tight, and it doesn't appear to have a leak (so far) but I have had to twist the tailpipe to the correct position a few times. The time before last I tack welded the clamp to the pipe, it simply tore a chunk out of the clamp and turned. The stainless is very thin. There will likely be new mufflers coming next year, so I'll deal with it between now and then. The new mufflers will probably not get the stainless band clamps. My clamps came from Summit. Gene