18's with 275s on a Duster

33IMP said

If i cant measure the wheel width, its cause its got a tire on it, and i can measure the tire. An 18" section width tire with a 3 1/2 bs will fit, with 5 1/2 it wont. Dont know, or care, what the offset is.
Edit: curious why it is"ET" and not something self explanatory, like "offset ", or "off" or a simple + or - number?

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And yet you're talking about a wheel that will in no way, shape or form fit one of these cars without massive modifications, making the whole thing moot. That little bit of info is good for your car alone. Not very helpful to anyone else. Which is why there are standardized ways to measure this stuff.

And again, just look at the wheel!!! If it was made in the last ten years, the specs are stamped or cast right into it.

As far as ET, it's German. It's short form of the German word 'Einpresstiefe' which translates as 'insertion depth'