Tread Wear Advice

[Luckypants]

Hello Tyre Gurus!

I would like an opinion on what is causing the stepping effect in the tread of my rear. I have run the tyre at Honda standard 42psi, with all of it's 5000 miles being two up and the last 3000 were with luggage as well. The steps have always been there on every tyre I have had on all my VFRs, including Bridgestone BT-023, Dunlop D203, Avon Storms (I and II). This tyre is a Michelin Pilot Road 3.

This time the stepping effect has been very pronounced. The steps became more pronounced and therefore an issue on Alpine hairpins fully loaded, I put that down to having to use a lot more throttle in first/second gear to keep the bike moving, but I would like some advice to cause of this so I can avoid it in the future.

The step is on the leading edge of the tread blocks at the edges of the tyre, so the rear of the tread block wears down while the front edge seems to roll over itself to form a little burr. While riding the tyre feels like it is squirming and wriggling a bit when leaned over and hard on the gas, but does not slide.

Some pics to help









Discuss please.

[yorkie_chris]

What shock is that? How does rebound feel?

[NTECUK]

Its made worse by the fact you were loaded.
The load is made worse by under damping
This causes the tyre to squat out of shape.
Look what thry have to put up with .
Shearing loads ,high temprature and diffrences in expansion of the tyre carcase

[Bibio]

http://www.youtube.com/watch?v=xLbxc...eature=related

[NTECUK]

Is that Dave Moss Unsprung: Tire Wear?.
Cant see youtube at work(fierwall)

[Luckypants]

Originally Posted by yorkie_chris

What shock is that? How does rebound feel?

It is the standard VFR shock. Has pre-load and rebound damping adjustment only. It was set with enough pre-load to ride level with pillion and two 12KG panniers. Rebound damping not changed.

Rebound feels like suspension, it goes up and down Chris I'm not good enough to feel nuances of damping, but I'll say it felt a pogo at times. Gunning it out of hairpins in 1st or second made the bike feel a bit squirmy, but cannot say if it was the tyre or suspension. To me it felt like tyre.

Wow that was illegal thousands of miles ago. That is more bald than me!

Seriously, it may be a very soft compound tyre. Try a different make next time. Great grip, poor wear.

Regards

H

My guess is its been overloaded when cold

Sent from my GT-I9300 using Tapatalk 2

No expert but they way its worn look like a tread pattern fault.

So who ever designed the pattern has'nt taken into acount the tyre compund and wear rate to allow the tread pattern to not wear like that.

Im most likely talking utter rubbish but from the way its worn, following the tread pattern it seems like that may be a cause.

[NTECUK]

Originally Posted by Mikey10

No expert but they way its worn look like a tread pattern fault.

So who ever designed the pattern has'nt taken into acount the tyre compund and wear rate to allow the tread pattern to not wear like that.

Im most likely talking utter rubbish but from the way its worn, following the tread pattern it seems like that may be a cause.

Rebound Rebound Rebound