Picked up my Trek EX 9 at the weekend! - Wheels not true??

nygie

Picked the bike up on Sunday and took it home to find the cleats where different to my road bike so I decided to wait for some MTB shoes rather than swap cleats on my road shoes.
Checking over the bike in the mean time, whilst blitzing through the manual I noticed the front tyre was not seated properly on the bead and the wheel seamed a little untrue and when spun there is noise from the disk brake which corresponds to the slight wave in the wheel. The back wheel has some slight movement too.
Is this normal? I would have expected them to be true as a die having not even been ridden?
Should I ride it and bring it to the shops attention at the first service or take it back?
Or ring them first and bring it to their attention and then ride it till the first service?

Cheers

nicklouse

rim shape and disc noise are not related.

In that you dont need the rim to be fitted to the hub for the disc to be in place.

I guess that you have not ridden the bike yet? the pads do need to bed in and this tends to remove the edges that are catching and making the slight noise.

and yes SPD is different to SDP-SL.

back to the wheel.

is it the tyre that is not seated correctly or is the rim out of true?

if the rim i would be calling the shop. the tyre try reseating it.

nygie

I haven't ridden it!
The tyre has been seated properly.
I know the rim trueness should not affect the disk trueness but the noise timing is spot on with the wave in the wheel.
I think I'll video it for proof (in case it gets any worse and the shop try and wash there hands of it saying it's my fault) and take it for a break in ride to get the pads bedded in and see how things are.

Cheers

Shaggy_Dog

factory built wheels are very rarely perfectly true out of the box, a good mechanic would have trued them while he was P.D.I.'ing it. Bontrager Tubeless ready wheels are notoriously difficult to seat tyres on, mop the rims with soapy water and inflate to about 70psi or until you hear the bead 'pop' into place using a track pump or compressor. Then let the tyres down to normal pressure (30-40psi). Brake rub is pretty common on Avid rotors, if it's just a light 'fing-fing' sort of sound then thats fine, if the wheel stops abrpuptly instead of spinning freely then the brake is badly adjusted.

Doesn't sound like a very thorough bike shop to be honest

gonga

Shaggy_Dog wrote:

factory built wheels are very rarely perfectly true out of the box, a good mechanic would have trued them while he was P.D.I.'ing it. Bontrager Tubeless ready wheels are notoriously difficult to seat tyres on, mop the rims with soapy water and inflate to about 70psi or until you hear the bead 'pop' into place using a track pump or compressor. Then let the tyres down to normal pressure (30-40psi). Brake rub is pretty common on Avid rotors, if it's just a light 'fing-fing' sort of sound then thats fine, if the wheel stops abrpuptly instead of spinning freely then the brake is badly adjusted.

Doesn't sound like a very thorough bike shop to be honest

Good advice

this is exactly what i had to do when i couldn't seat the tire right on my bontrager rims.
I had fit and re fit the tyre 4/5 times and couldn't work out why it wouldn't seat.
A quick look on here and i pumped the tyre to 55-60 psi with loads of soapy water made the tyre pop on.

nygie

Thanks peeps, my mind is at ease now.

Shaggy_Dog

It's fair enough when you're at home or in a workshop, but when you're out on the trails you're in trouble. You could try chain lube if you carry it with you but I wouldn't want to put lube on the rim just in case it migrated to the rotors. It's the only bugbear on an otherwise excellent pair of wheels for the dosh, they're not as stiff as a hope pro2/ dt 5.1 setup but they're lighter and easier to get tyres on in the first place, even if they don't seat particularly well

Shaggy_Dog

'course, if you go tubeless and use stan's jiz (as we call it) instead of bonty super juice you shouldn't ever have to worry about punctures on the trail.





In theory at least...

trailpuppet

Before you ride it take it back, ask for a thorough check and have issues resolved. Then if there are future issues shop will know not to mess you around. Be calm when doing so