Comment by AnthonyMouse
10 hours ago
The second one is the better one.
There are some laws prohibiting the sale of used tires with less than a certain amount of tread. In some motorsports you want tires with no tread (slicks). Moreover, they're being used in a different context (a vehicle on a track rather than public roads). But the law prohibits the sale because it takes no account of the context.
> There are some laws prohibiting the sale of used tires with less than a certain amount of tread.
I think you're confused. I'll explain why.
Some contries enforce regulations on what tyres are deemed road-legal, due to requirements on safety and minimum grip. It's also why it's illegal to drive around with bald tyres.
However, said countries also allow the sale of tyres for track and competitive use, as long as they are clearly sold as not road-legal and for competitive use only.
So, no. You can buy track tyres. You just can't expect to drive with them when you're dropping off your kids at school and not get a fine.
Also, it should be noted that some motorsport competition ban or restrict the use of slick tyres.
Now I'll explain why I think you're confused.
Some jurisdictions ban the sale whatsoever of used tires with less than a certain amount of tread. It's not that you can't put them on a car to drive on public roads, it's that no one can sell them to you. They prohibited the sale rather than the use, thereby interfering with the people wanting to make the purchase for a different purpose.
> Some jurisdictions ban the sale whatsoever of used tires with less than a certain amount of tread.
No, not really. This appears to be the source of your confusion. In Europe+US, thread restrictions are enforced on standard road tyres marketed for use in public roads. You can buy slicks if they are marked for track use, but it's illegal to drive around with them.
But feel free to cite exactly what jurisdiction and regulation prevents you from buying tyres. I'm sure you'll eventually stumble upon the source of your confusion once you start to look up your sources.
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>Some contries enforce regulations on what tyres are deemed road-legal, due to requirements on safety and minimum grip. It's also why it's illegal to drive around with bald tyres.
Yes, this is a good thing. Where it becomes bad is when someone says "Oh, we should stop that from happening, let's ban the sell of such tires." With no exception.
This isn't a problem unique to regulations and laws. In software development, it is very common for the user to not think about exceptions. The rare the exception, the more likely it is missed in the requirements. It is the same fundamental problem of not thinking about all the exception cases, just in different contexts. You also see this commonly in children learning math. They'll learn and blindly apply a rule, not remembering the exceptions they were told they need to handle (can't divide by zero being a very common one).
A better example might be mattresses. There are states (Kansas) where it is illegal to sell a used mattress, under any circumstances. Even if, for your specific circumstances, the "it's unsanitary" reasoning isn't valid. You, as an individual, cannot sell your "I slept in it a few times and realized I don't like it" mattress to your friend.
Do you have a link to an actual Kansas statute which makes it illegal to sell a used mattress? I searched for it without success. Various sites claim that Kansas makes this illegal without citing a statute (often in the context of hokey stories about people finding silly loopholes in this purported law), but I'm suspicious that it's an urban legend.
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