Have a set of HED Ardennes with a lot of miles. Probably >30,000. Lot of hard miles.
The rim wear indicators on both rims are still visible, but barely.
They are extremely true.
But I've recently noticed a "bump" in both wheels while braking. Pretty significant. No imperfection is noticeable visibly. But in a truing stand I can definitely detect a *very* slight warping of the rims. Very much smaller than a millimeter. Only detectable by sensing the increased drag at the spot as the wheel spins. I can't even "see" the rim gain/lose contact with the probes, just feel the drag. There is no visible rim damage at the spots where the increase drag happens.
Is this something that happens with age, and time for new rims? I don't think it's from hitting a pothole or anything because hitting the rim that hard seems like it would have pinch-flatted my clinchers, and I haven't had that happen on these wheels.
Thanks for any advice.
The rim wear indicators on both rims are still visible, but barely.
They are extremely true.
But I've recently noticed a "bump" in both wheels while braking. Pretty significant. No imperfection is noticeable visibly. But in a truing stand I can definitely detect a *very* slight warping of the rims. Very much smaller than a millimeter. Only detectable by sensing the increased drag at the spot as the wheel spins. I can't even "see" the rim gain/lose contact with the probes, just feel the drag. There is no visible rim damage at the spots where the increase drag happens.
Is this something that happens with age, and time for new rims? I don't think it's from hitting a pothole or anything because hitting the rim that hard seems like it would have pinch-flatted my clinchers, and I haven't had that happen on these wheels.
Thanks for any advice.