Yesterday at my father’s polo on summer tires changed and when I put the Ultra Grip 7+ I suddenly see that we unfortunately got a screw with a tyre. Spackscrew pulled and air goes out of the tire. Tires was only driven about 2000km.. Regardless of the consideration whether you can vulcanize this ( screw is in the middle of the profile and not at the side flaw, so should theoretically go), I think about a new tire for safety reasons Since there is no longer the Ultra Grip 7+, only the new Ultra Grip 8. Are there optical profile differences between both tires? When I look at the images in the net I don’t see much …