My Autel Mx tpms sensor failed so I needed to swap it out. I have 18” alloy wheels and 27” tires so I wasn’t sure how this was going to go. I put on the non marring attachment and tried it out. I saw some reviews use a mallet so I had one handy and it did help. After you take out the valve stem to let out the air you wedge this thing under the lip of the wheel. First attempt I didn’t get it deep enough and then took it back off. The trick is to press it down with your weight and then move it under the lip. I have a couple light taps and it sat under the lip by about 1/8”. Hold it in place and then hand tighten the front nut. Once it gets tight use an adjustable wrench and tighten it some more. Then start on the other nut to plunger it down. I held it in position just in case as I plunged it down. Once I got lower than the sensor I replaced the sensor (press in style so it comes off rather easy). Undid everything, put a ratchet strap around the tire to assist reseating the bead and then blew it up. I did scratch the inside wall a bit on the first try, but second was minimal scratching inside the lip. Tire spoons were useful to help get the bead around the sensor. After I had it all filled up I checked for leaks and found a small leak (10 yr old winter tire so they have a couple small tears around the bead.) I decided to deflate the tire and check it out. Second time was much faster and I cleared out some gunk that caused the leak. Overall a good tool. It is way easier than using the harbor freight manual tire exchanger I used last time. The bar on that kept slipping. This was much more secure.
Masood 
