The rear tire on my bike wobbles. how can i fix this?
no spokes are broken. i think it is a tire issue, but i can't see any imperfections.
save your time and money, just take it to the shop.
check the hub and/or skewer and make sure it is tight
check proper inflation in the tire and make sure it is "seated"
take it to your local bike shop to check "true"
The spokes may not be broken, but they can be slack - they are supposed to be under tension, which keeps the rim centered around the hub. Using your thumb and first finger, lightly pinch each pair of spokes together about 2/3 of the way out from the hub. All the spokes should have a slight give, all about same. If one (or more) set of spokes feels loose, take it to a shop to have them tightened. This will "true" (align) the rim to the hub.
There are a couple of possibilities here that this could be...
1) Lift the wheel off the ground and try to move it from side to side. If it feels loose, it could be loose bearings, a loose skewer, or a loose axle nut. I suggest a trip to a shop for this.
2) If it LOOKS wobbly because the tire TREAD wanders around then it is either a tire tread molding issue (not dangerous) or the tire isn't seated correctly. Relieve the air pressure and pull up on the tire, working your way all around the rim, then reinflate.
3) If it is neither of the above, your wheel has to be trued and this also requires a trip to the shop. To do a quick check, lift the wheel off of the ground and spin it slowly. Observe the distance between the rim and a brake pad. If this distance remains about the same (within about 1/16") during the entire rotation then it is fine, but could probably be better. Typical factory specs for true is +/- 2mm.
26 years in the industry
does the wheel wobble when your not moving? if it does, then it just needs an axle adjustment. any bike shop should be able to do that for free or very cheap (it helps if you buy something from them first, they are more willing to help).
if the axle is tight and the wheel wobbles while riding, then its most likely an out of true rim. a small wobble is easy to fix (for a mechanic) but a larger wobble may demand a new rim. for cheap bikes, its easier and sometimes cheaper to just get a new wheel.
bike shop mechanic
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