Thanks for the replies, I'll post on those sites. Not a very exciting story. I had a new front tire installed and they found the crack. I can't understand why, I baby it...............
Canadian FJR
I don't know either. It might help to be sure your spokes are tight. I run 32 PSI in the front tire when on pavement and 36 in the rear. I got those numbers off an old KLR rider on one of the KLR sites, and has served me well. Could have just been a front rim with a weak spot out of the factory.
I know I'm showing my age here, why not, I'm fecking old; but you two young whippersnappers do know how to tighten KLR spokes don't you! Loose spokes crack rims!
If one has been negligent in keeping their spokes tightened on a moto, this can lead to a rim cracking. Starting in 1963 with three British bikes in a row, I became a fanatic about keeping those Limey rim spokes constantly inspected. On a KLR being used heavily off road, you should "ting" those spokes every two thousand miles!
If you just want to check your spokes. Take a screwdriver and drag them around both sides of the wheel hitting every spoke. If every spoke is tight there is no need to mess with them. Tight spokes "ting" and loose ones sound flat.
It's not to hard to straighten a wheel and with a little practice it all makes sense. With the wheel elevated so you can spin it and the air out, spin the wheel while looking from the front to make sure it's off or true. Take a screwdriver and slowly move the spokes past it so the screwdriver hits every spoke on one side. They should all make a nice tight "ting". A dull note will indicate a loose spoke. Mark it. Check the other side using the same method. If a wheel is off, you will have a spoke loose on one side and tight on the other. You will need to loosen the tight spoke and spin the wheel to see how much it comes back to true. If the wheel is straight and with a loose spoke I would just snug it up enough so that it "tings" when the screwdriver hits it, otherwise you will pull it off true.
This works on bicycles and motorcycles and with a little practice you can true a wheel. It's easy to get too aggressive. Back off a little and remember that the other side is also pulling the wheel. I'm sure others will chime in on their technique but truing a wheel is really easy unless it's taken a hard hit and the wheel is out of round (as in having a vertical dip or bulge).