front tyre cupping

jas123

jas123

I have an 08 superduke, and the front tyre is cupping. The independent shop says I have bad fork bushings or low fork oil height( without seeing the bike). I bought this bike new last year and only have 3500 miles on it. Is this possible? Does any one have any experience with this?
KTM666

KTM666

...or running incorrect front psi or miss matched supension or very hard on the brakes ....How do they know without seeing the tyre????
jas123

jas123

I brought him the tyres and wheels only( to be replaced) not the whole bike.
Reb

Reb

Never trust shops or previous owners to know what the're doing. Check everything yourself to have a known base line to start with.

Motorcycles are like airplanes. The pilot is responsible for checking it over before takeoff. Your life depends on it.

A mate of mine rode his bike over 2000klm. Front tyre chopped out after 700klm. Replaced it and kept going. New tyre was showing the same problems. Finally put it into a shop and found only one fork had oil in it.

He had the fork oil changed at a shop before he left home. The wankers put the oil volume for both forks into only one fork.
jas123

jas123

I bought this bike new from a KTM dealer, I assume that the factory filled the forks with oil.
DribbleDuke

DribbleDuke

Post missing.

Ducati Pete

Ducati Pete

WTF is cupping?
KTM666

KTM666

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BASH69

BASH69

Can also be down to bad rebound or pre load settings!
TLS_Russ

TLS_Russ

Post missing.

SDNerd

SDNerd

I'm going to make this very easy for you. Yes, I could write a bunch of paragraphs about your problem - beginning with the most common suggestions already put forward, followed by yet another droll (to some) discourse on the hows and whys.

If you bought this bike "new last year" as you state, and its a 2008, it is still under warranty. It is warranted for 2 years.

The promised "easy" part: Take it to the stealer (any KTM stealer), and have them deal with it. Exercise the warranty.

Back to the thread we're supposed to ignore, because frankly, this is tiresome.
KTM666

KTM666

Post missing.

jas123

jas123

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Ducati Pete

Ducati Pete

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Ducati Pete

Ducati Pete

Image
jas123

jas123

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jas123

jas123

Post missing.

Ducati Pete

Ducati Pete

I'm not as quick as Bert, but then again I'm human, not a AI supercomputer.

Hope you get this sorted. How do the forks feel on braking and when you release the lever?
How does the front feel over bumps?
jas123

jas123

Seems to feel fine, the front end is alittle harsh. But I like the solid feel.
Lowrance

Lowrance

post up a few pics. and we could help find the reason for whats happening to you tyres.
TLS_Russ

TLS_Russ

It's very unlikely the cupping you are trying to desrcribe is due to worn suspension bushings (or low fork oil)....your bike is fooking brand new. That shop is trying to get you to drop off your bike so they can milk some cash from you.

It's likely down to pressure (over or under), mileage and age of the tyre. Is it the original tyre? If so, I think your problem is solved as that tyre would be greater than 6 years old. Put on a new set of Q2s and call it a day.