2005 BMW X5 3.0i
About 2 weeks ago, my rear tire started leaking and I found a small metal piece that was stuck. I’ve done many repairs with nails and screws but this metal piece was a bit odd shaped. But I did it the same way using tire plug kit. Today my tire pressure is low and upon foam testing, there’s tiny slow leak at where I repaired. I’m hesitant to use the tire plug kit again for which I need to basically create a hole. Should I just use Slime Sealant?