I've plugged many tires and zero issues running them. However never had to use two. Well I have actually put 3 in one tire at one time (not the same hole) just to get it back onto a gravel road where I could get the truck level to change the tire. Guess who makes tire appointments immediately after buying a new vehicle now. Absolute shame this shit tires they put on new trucks now. Figured I could get one week on them.