I wouldn't bet on it lasting, though it very well could. I had two cracks in one of my rims. I didn't even know it till my tire blew to pieces. When I went to get a new tire, they discovered the cracks. I had it welded by a local shop. Both cracks were on the inboard side. The welds weren't pretty, but they did the trick. Bite the bullet and have the crack welded, ground and the wheel rebalanced.