It can take 24 to 48 hours for a seal coating to cure completely, depending on weather conditions. In sunny, hot conditions the curing time will likely be closer to 24 hours, but in cloudy, cooler temperatures it might take closer to 48 hours. Expect to see some tire marks, possibly for several weeks, after sealcoating is done. This is especially true in the heat of summer. This is normal and they will go away on their own. If crack sealant has been applied to your driveway, it will be visible through the seal coating. Do not turn your wheels while your car is sitting still. Power steering will tear the sealer film.