Visual tyre inspections - How often do you do yours?

[49er]

They should be done before each ride, yeah right!!

I have a front Sport Demon that has outlasted 1 &1/2 rears, but is badly cupping. On this mornings inspection, I discovered a lamination that runs transversely across the tread. I was dismayed to find this, as I have a pretty high regard for these tyres general performance. Is lamination a general regular occurance across brands, or should I be weary of replacing this tyre with a replacement Sport Demon?

http://i155.photobucket.com/albums/s309/49er_photos/P1000370.jpg

http://i155.photobucket.com/albums/s309/49er_photos/P1000369.jpg

[Guest]

I had that happen to a Dunlop GT501 and I replaced it.

[tkent02]

I don't think that's anything to do with lamination, not sure what it is. Good time to ask some tire experts?

[Nessism]

This tire looks pretty well used up so no real loss in tossing it.

[49er]

Com on Ed, it's only just scrubbed in.

Alright it's stuffed, but should it have laminated at all? It's definetly lamination and it isn't just situated in that position.

[Guest]

Either you ran over a perfectly straight knife or bad molding from the manufacture.

[49er]

Either you ran over a perfectly straight knife or bad molding from the manufacture.

No knives involved here. I could see that glazed look in your eyes Bill.

When I peel back the rubber, I can see the shinny surface of rubber at an oblique angle to a depth of around 2-3 mm. IMO, definately a molding flaw.

If it were in a steel section, it would have been caused by the metal cooling too fast during the extrusion process. Possibly the same for rubber.

[posplayr]

Either you ran over a perfectly straight knife or bad molding from the manufacture.

He musta been in my garage and ran over a razor blade

[49er]

He musta been in my garage and ran over a razor blade

Not possible. You were banned from associating with razor blades after your last MLS gasket failure.