I am wanting a nice set of wheels for my 86 xj6, I really like the 17 inch fourth gen corvette wheels. The lug pattern is the same but they are 9.5 inches wide. Has anyone used these before? Would they be a possible option or should I look for another wheel?

Probably too wide but I have no direct experience using them.

Whichever wheel you choose it's the center hole that will probably pose a problem....as the Jag hubs are bigger than typical. Often the center hole can be bored out, though

Cheers
DD

Yeah i figured they would be wide as the widest ive seen people using are 8 inch. I just cant remember the model of the bmw wheels i was originally going to use. Do you happen to know of any other 17 inch wheels that do work on these series 3's?

Look here

https://www.wheel-size.com/

I've seen pics of Ser III XJ sedans with 17x8 wheel from a 1995-97 XJR


Cheers
DD

Doug is correct, Jaguar hub diameter is 73.9mm and most early ('60's, '70's, '80's) Chevy full size cars are 70.3. Alloy wheels shouldn't pose a problem in boring them out, stamped steel wheels might be harder.

Dave