Rim Wear Measurement

[Foghat]

Am I being thick here? Probably . But how is(are) the width(s) of the rim hook(s) taken into account?

Maybe a pic of it in action might help

The pincers simply measure rim wall thickness on each side of the rim in two separate measuring exercises.....the hooks are completely out of the equation. One might need to experiment as to where exactly underneath the hook one needs to apply the pincers, but it doesn't take long to get a feel for the right position.

Of course it can only measure above the box section of enclosed box-section rims (see @andrew_s's images above) - on these, the rim wall of the box section may be thinner than what you're measuring, but one wouldn't know. So iwanson gauges are useful but not the infallible whole answer.

 

[Deleted member 1258]

The 4mile walk home with a wheel that didn't turn wasn't😂😂

At least you were only four miles out.

 

[andrew_s]

Of course it can only measure above the box section of enclosed box-section rims (see @andrew_s's images above) - on these, the rim wall of the box section may be thinner than what you're measuring, but one wouldn't know. So iwanson gauges are useful but not the infallible whole answer.

Wearing through into the box section isn't as drastic as wearing through the flange. You'll get a worrying hole, and scraping noises from bits of aluminium embedded in the brake blocks, but you won't get the tyre blowout and instantly unrideable wheel that a flange failure gives.

 

[Foghat]

Wearing through into the box section isn't as drastic as wearing through the flange. You'll get a worrying hole, and scraping noises from bits of aluminium embedded in the brake blocks, but you won't get the tyre blowout and instantly unrideable wheel that a flange failure gives.

Agreed. Fascinating that the OP's hole got so big and extensive before being noticed!

 

[andrew_s]

I would guess that it was a rear wheel that was largely hidden by mudguards