can anyone help. my dr 250 has a wobbly back wheel. I have picked the back end and got my mate to give it a wiggle and it had no give in it so I don't think it is the bearings so what else could it be?
How do you mean wobbly. Was it the tyre looking out of like when someone was following. I think if there is no play in the bearings (wheel and swing arm) then measure between swing arm and wheel, also swing arm and tyre while rotating the wheel. Might show up wheel damage or misplaced tyre as above
The dominos delivery boy pulled up next to me at traffic lights told me that it was wobbling while he following, how do I sort out a misplaced tyre? Pump it up?
Sounds like it may be buckled, can you raise the rear end, spin the wheel and see if it's the tyre or wheel out of true?
Lift back of bike off ground, tape a stick or something to the swing arm so its just touching the rim and spin wheel. Then move stick so it just touches tyre and spin.
Now you know if its rim or tyre.
If tyre, deflate, undo rim lock, bounce it about and pump back up to ensure bead pops out.
If rim unless loose spokes which you can tell by tapping with screw drive etc and they should 'ping' not sound 'dead.
If its the spokes it may need simply a tweak including the ones either side but its cheaper if the wheel needs more work to get a wheel builder to do it. The spoke torque wrenches are around £60 plus the spoke wrench cost which if you dont use often is expensive considering it should cost alot less for a wheel builder to true the wheel inc any new spokes needed ( Plus they have the stand and dial gauge for run out)
It is possible to repair a wheel yourself if its just re-spoking and you feel confident. I've rebuilt a rear wheel before, not such a bad job especially when only doing a couple of spokes at a time. This helps maintain trueness (for an amateur) and just be sure to check and recheck the wheel runs true (Dial Test Indicator) and the tightness of the spokes after riding.
unless loose spokes which you can tell by tapping with screw drive etc and they should 'ping' not sound 'dead.