They put it on casting, by the end of the second season, the front left began to lower. I worried for a long time that the spikes - but no. The disk bent in the summer made itself felt. In general, as it turned out, excellent sneakers. I recommend. And, comrade, RUN! Some pros: Price. With adequate break-in, you can hope that the spikes will be in abundance for the entire service life. Bought in the fall of the 16th year, went two seasons on them and studs 7-8 flew out on all 4 wheels. And even less. Taxiing, braking and acceleration are normal. Not to say that something extraordinary, but for the money - just a super option. . I sold the old car and put them on a new one (ff 3 rest) but a fresh year. Everything is just as clear. Has some cons: If you do not break in normally at least the first 500 km, you will say goodbye to spikes by the end of the first season. This fate has passed me, but my comrade, who loves to burn, is not. Noisy. But this is a spike, where did you see her silent? ) . About running was confirmed on the second machine. Again I bought with friends and ran in as it should. And acquaintances - not as it should be. The result is as described above.