Hi guys i have a set of17" et37 8j merc alloys could i run 15 or 20mm adapters or would they stick out to much

I personally wouldnt touch 15mm anymore they are horrible (no thread) stick 20mm on wheels will be et17, youll need a little stretch.

What dif you use on yours mate?? What size and et was yours?? Any rubbing

i had et 51 7.5j with a 20mm adapter making it et31 and tbf on the back i was going to put 30mm adapters on to make the wheels poke a bit more as they still sat slightly in from the arch if that makes sense i think et21 would have suited my wheels perfectly with no issues. like i say et17 should be fine but you will have to have stretch