Yeah my fingers hurt after putting them on my Mavic rims. I almost gave up a few times.

A website which could be helpful, but...

I’ve dated two Peugeot bikes within a specific year range by headbadge...



The first, a UO-8 which I’ve since sold, was nailed down to an exact year based off of serial number tag riveted to the bottom of the bb shell.

The second, also a UO-8 remains vague since it’s tag is missing. It does have an aftermarket serial number on the left drop out, and a stamping under the shell...




...but apparently that’s meaningless. I’m satisfied enough knowing it’s no older than 1971, and no newer than 1974 as indicated by the headbadge...
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have a photo? Does it have a set of bottle cage bosses? Most likely late 70’s. Can be very difficult to tell exact year though because Peugeot, especially in the 70s, were very bad about the bikes they built not matching what their sales brochures listed. Check the pedals and the wheel hubs for date stamps. It wont be definitive, but should give you a good indication of year of manufacture. I owned a PKN10E, and still to this day have no idea wether it was a ‘79 or an ‘80. Decent bike when it comes to riding, but mine was an absolute nightmare because it was a literal mix of french and English standards, I $hit you not. Either way, those stronglight cranks are always a nightmare because of the proprietary crank puller size. It should (and I say that with a grain of salt) should, come with simplex SJ derailleurs, which were actually very good. Awesome (Peugeot branded) MAFAC Competition centerpull brakes as well. But the frame isn’t a full 531 frame. Only the main triangle is 531 and it’s straight gauge 531, not butted. No idea what the rest of the tubing is but I would geuss it would be Peugeot’s ‘carbolite 103’. Which is a high-tensile steel. Not a bad bike to ride, but in my opinion, lacks the ‘liveliness’ of a full butted 531 frame.

tires? Folding bead tires are literally tires that can fold. Pretty self explanatory. Usually the bead is made from Kevlar. Non folding tires typically have steel beads, and they are like car tires in that they are always the shape of a tire. Pretty much all lightweight road/racing tires are folding. Most heavy duty tires like cruiser tires or commuter tires are non folding steel bead. A quick google search can explain it pretty easy, if you need photos.