Yes, and this intentionally. I saw quite some forum members looking for 18 inch setups. Here you have one, perfect fit. With this setup you can use stock 18 inch tire sizes without any problems. The wheels are light, not pricey and seem to be a bargain concerning what you get. I needed longer bolts ( go for +12 up to +25mm ) due to the 12mm spacers on the front wheels.
Thank you for understanding.