Hypothetical question: tires & curb damage

Through lack of skill or by accident, most driver will occasionally scuff their tires against a concrete curb. For ex. through poor parking skills or by having to squeeze past other cars along a very narrow
road.
How much rubbing damage (scratches, scuffs, etc) is permissible to the sidewall of a tire before it would have to be replaced? Or is minor scuffing to be considered part of 'normal wear & tear'?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Scuffing normally OK - any cuts = replace.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
on about something:

I can't speak for other countries, but in the UK normal scuffing of the outer rubber layer is expected and will be allowed through an MOT. Cuts, chunks of rubber missing, sidewall nylon ply visible will not.
Also the if the rubber is crazed, and looks aged or weak, they will often pull you up on that.
You will also fail if the side wall has any unusual bulges, usually a sign of over heating due to exceeding the rated speed.
Dodgy.
--
MUSHROOMS ARE THE OPIATE OF THE MOOSES

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.