fethered tyres

[bluey]

hi all after a ride out last sunday with other half she complained there was a lot of vibration

anyway got home looked over bike and noticed the tread on tyres are all over the placed raised higher in some places than others the tread running centre of tyre is stepped and side tread that all over the place

i was told since then that some tyres are made this way is that true and would they cause vibes if its not them causing vibes can anyone help cheers

its a 1200 gs 06 plate

 

[davegs]

tyres

What about pressures?

 

[Wapping]

Quite normal.

Get new tyres.

 

[bluey]

What about pressures?

pressure good but i allway thought that running on bad pressure was the cause (not long got bike ) second run out last sun

but got a bit confused when a was told they made tyres like that ????? he did describe exactly how my tread was without seeing them so now really confussed

 

[Roymondo]

If I understand your posting correctly, what you are seeing is typical tyre wear. Front tyres in particular often wear unevenly, with the leading edges (the first bit to contact the road as the wheel turns) of the tread blocks wearing down much more than the trailing edges. This is largely a result of the blocks "squirming" under heavy braking - something which will always happen anyway, but to an even greater extent if the pressures are a bit low.

You don't see notice it much on rear tyres, possibly because they wear much faster anyway (rear tyres generally start off with a lot more tread on them, and last maybe half as long as the front one), plus the tread blocks tend to be much bigger (and thus more stable).

I don't think the tyre wear and vibration are connected - Vibration that gets much worse as the road speed goes up is typically caused by the wheel/tyre being out of balance. Vibration that is there at all road speeds is typically caused by the large chunks of metal thrashing around inside the motor - we like to refer to this as "character"

Stick a photo or two up of the uneven wear and I'm sure we can all have a stab at diagnosing the cause.

 

[cookie]

I don't think the tyre wear and vibration are connected - Vibration that gets much worse as the road speed goes up is typically caused by the wheel/tyre being out of balance. Vibration that is there at all road speeds is typically caused by the large chunks of metal thrashing around inside the motor - we like to refer to this is "character"

+1 on that.

 

[bluey]

thanks will try getting some pics up tomorow

 

[bisbee]

What make of tyre and what mileage

 

[itspilsbury]

Same problem here!
Bike 1 yr old, tyres Michelin Pilot Road 3's, front tyre is still perfect profile, rear tyre is feathered. All long tread grooves around circumference and both sides of the tyre.
Done 4,800 miles on them. When measured carefully with a calibrated gauge one side of the tread groove 3mm the other 1.2mm.
Spoke with VOSA who wondered if the suspension was worn.
Spoke to BMW dealer who said it often happens with front tyre with telelever suspension. Suggested my tyre pressure might have been run low but to ring Michelin to check what pressures they suggest as the Pilot 3 is not a recommended tyre by BMW for the GSA. Spoke with them they suggested sending the tyre to them to inspect. Michelin pressures advised were exactly the same as BMW.
Looked at my mates GS with worn Tourances on and I see his rear is also feathered but not half as bad as mine.
My pressures are checked regularly and rear is either run at 36 one up or 42 two up.
I am 16 st and always have the ali panniers on, I do wonder with my weight and the panniers on even though they have very little in them as to whether I should always run on 42lb in the rear anyway??? as if loaded or two up.
Due to the tyre wear the rear tyre is now stepped all the way around slightly, and worn out early. I am unsure but I am now wondering if my original Tourance EXP wore a bit like this as well, but I cant remember!

 

[Michael R1150GS Adventure]

mine do this always - just change em if unhappy I always found to be answer

especially the front!

 

[DavidHale]

Or turn them around so they wear evenly. HTH.

 

[itspilsbury]

Or turn them around so they wear evenly. HTH.

They are directional

 

[beatmeier]

If I understand your posting correctly, what you are seeing is typical tyre wear. Front tyres in particular often wear unevenly, with the leading edges (the first bit to contact the road as the wheel turns) of the tread blocks wearing down much more than the trailing edges. This is largely a result of the blocks "squirming" under heavy braking - something which will always happen anyway, but to an even greater extent if the pressures are a bit low.

You don't see notice it much on rear tyres, possibly because they wear much faster anyway (rear tyres generally start off with a lot more tread on them, and last maybe half as long as the front one), plus the tread blocks tend to be much bigger (and thus more stable).

I don't think the tyre wear and vibration are connected - Vibration that gets much worse as the road speed goes up is typically caused by the wheel/tyre being out of balance. Vibration that is there at all road speeds is typically caused by the large chunks of metal thrashing around inside the motor - we like to refer to this as "character"

Stick a photo or two up of the uneven wear and I'm sure we can all have a stab at diagnosing the cause.

sais it all

 

[DavidHale]

They are directional

TKCs arent...

 

[BeamishTripleBlack]

Sounds pretty normal from what I have experienced.