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Least Used Metric Socket/Wrench Size?
Posted: Tue Jul 07, 2026 1:50 pm
by Tom
I'm making trays for my wrenches and started wondering if it's even worth making some sizes. So it got me wondering, what sizes are the least used in general? I'm voting for 18mm as I can't think of a single time I've ever used that size, but curious about others' experiences...?
Re: Least Used Metric Socket/Wrench Size?
Posted: Tue Jul 07, 2026 2:37 pm
by Wespa
18mm might be rare in classic Porsches, but common for example in 90s BMWs and Saabs. I voted for 14mm, 15mm is another good candidate.
Re: Least Used Metric Socket/Wrench Size?
Posted: Tue Jul 07, 2026 3:57 pm
by PSU_Crash
18mm shows up here and there in the JDM world. Fairly certain I've used it on some domestics too.
My vote goes for the 15mm.
It's entertaining that you even put the 10mm on the voting roster
Re: Least Used Metric Socket/Wrench Size?
Posted: Tue Jul 07, 2026 4:15 pm
by gb951
15 mm
Surprisingly, there is a need for a 15 mm wrench or socket on every 944... Anybody know???
Re: Least Used Metric Socket/Wrench Size?
Posted: Tue Jul 07, 2026 4:38 pm
by jeyjey
Yeah, both 18mm and 15mm are used regularly on my E36 M3.
I can't remember the last time I used a 12mm, but that could just be because my memory is crap.