You're not correct. Negatives are always tough to prove, because if can't find the thing you are looking for it could be either because it doesn't exist, you don't recognize it when you see it or just aren't looking hard enough. Fortunately they're easy to prove wrong. I had a look at a tire I had in closet and found this:

Why do I think it's the manufacturing date?

• I bought the tire a few years ago on sale, so 2015 is a plausible manufacturing year
• This is what manufacturing stamps in molds look like: It's a replaceable part so the edges aren't as clean as the rest of the mold. The other common style would be a circle of numbers and arrow pointing to one of them, and the arrow would again be rougher than rest of the mold.

You're not correct. Non-existence is always tough to prove, because if can't find the thing you are looking for it could be either because it doesn't exist, you don't recognize it when you see it or just aren't looking hard enough. Fortunately they're easy to prove wrong. I had a look at a tire I had in closet and found this:

Why do I think it's the manufacturing date?

• I bought the tire a few years ago on sale, so 2015 is a plausible manufacturing year
• This is what manufacturing stamps in molds look like: It's a replaceable part so the edges aren't as clean as the rest of the mold. The other common style would be a circle of numbers and arrow pointing to one of them, and the arrow would again be rougher than rest of the mold.

You're not correct. Negatives are always tough to prove, because if can't find the thing you are looking for it could be either because it doesn't exist, you don't recognize it when you see it or just aren't looking hard enough. Fortunately they're easy to prove wrong. I picked a tire I had in closet and found this:

Why do I think it's the manufacturing date?

• I bought the tire a few years ago on sale, so 2015 is a plausible manufacturing year
• This is what manufacturing stamps in molds look like: It's a replaceable part so the edges aren't as clean as the rest of the mold. The other common style would be a circle of numbers and arrow pointing to one of them, and the arrow would again be rougher than rest of the mold.

You're not correct. Negatives are always tough to prove, because if can't find the thing you are looking for it could be either because it doesn't exist, you don't recognize it when you see it or just aren't looking hard enough. Fortunately they're easy to prove wrong. I had a look at a tire I had in closet and found this:

Why do I think it's the manufacturing date?

• I bought the tire a few years ago on sale, so 2015 is a plausible manufacturing year
• This is what manufacturing stamps in molds look like: It's a replaceable part so the edges aren't as clean as the rest of the mold. The other common style would be a circle of numbers and arrow pointing to one of them, and the arrow would again be rougher than rest of the mold.