I've had 3 different sets of slipstreams. One set of 16x7 on a 93 civic coupe which I autoxed at least once a month. The second set was also a 16x7 on a 91 eclipse gsx with some meaty 225/50-16's and drag raced the crap out it. Third set were 17x8 on the galant with 245/40-17 tires. Didn't autox or go to the track with this setup but they got their share of potholes driving through Manhattan. No cracks, no bends, no peeling, no warping no issues on any of the 3 sets.