I have them on my car however I am sra, they fit very nicely on mine but I'm not sure about IRS since its close with a solid. But if you do order them go direct from m&h and use the coupon "NEDRA"
I cant get them to fit on my car with a 17x10 xxr. But I think that's because I'm 99+ sra so it's .4 wider already plus the xxr offset sticks out a tad further than most 17x10 wheels that are made for our cars. My problem is they were rubbing the rear bumper lip. I thought it was my fenders so I rolled those, tried raising the car up some and that helped but with any sort of weight at all, or any decent weight transfer they still rub that rear section.