I purchased it when the price was reasonable; when winter arrives, I will go into further detail. two months into the winter: Given that the roads are more or less clean or salted 95% of the time, the grip is actually rather good. Of course, driving carefully in the first snow was necessary, but on days like these, the spikes are useless. They undoubtedly increase consumption, perhaps by 1 liter or so. I prefer it a lot more than spikes (I rode both); there are no braking issues, but there is no noise! Additionally, you can travel to European nations where spikes are forbidden.