From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
downgraded tyre /dˈaʊŋɡɹeɪdɪd tˈaɪə/
abgewerteter Reifen
see: tyre, tire, tyres, tires, green tyre, cleated tyre, cleated tire, flat tyre, flat, bald tyre, smooth tyre, worn tyre, siped tyre, grown tyre, recut tyre, regrooved tyre, regroovable tyre, plain tyre, slick tyre, remoulded tyre, remould, retread tyre, retread, recapped tire, recap, tubeless tyre, green tyre, uncured cover, reinforced tyre, overinflated tyre, implement tyre, diameter in service, retread, I have all-weathers on my car.