These pads were perfect for my application. I was going to fit my stock wheels but wanted them to be a little wider to be flush with the fenders. The 20mm spacers fit perfectly on my 2015 Subaru STI limited to 18" BBS wheels. My car is lowered 0.80" with Eibach springs and the fenders don't rub at all. Also, my wings aren't rolled up. The spacers didn't cause any vibrations, as they were hub centered and very well finished.One note the studs on the spacers are longer than stock studs so you will need open ended or deeper nuts.It wasn't a problem I just bought open ended tuner style nuts.Overall I am very satisfied with the product.The seller sent quickly and the goods came quickly,thanks!