Dear fellows enthusiasts as title says I m a bit lost on the maximum ET or minimum ET should I say as I would like to get some spacers. The story is: 18” alloys with 245/40 tyres and from my OEM 17” ten spoke on ET 47 I went to 32 ET but the wheels are still under so not really flush so the real question is do you think I can fit 15 mm spacers on back wheels and 10mm on front? Also I have spigot rings from 72.1to 66.5 if that matters in this case. I m worried about how much space would I have on the hub to put the wheels safe as it s quite a stretch from ET 47. Thank you