Great for my trailers with 225/75/15 tires. I have a tandem axle trailer and use two, one for each axle. The wheel chock also helps prevent trailer movement when jacking up and uncoupling. I got them as a deterrent against thieves and 90% of thieves don't mind seeing it there, especially with two as it would take a very long time to remove both. I also use lock nuts on the rims and two sleeve locks which is a great solution for securing the Trifecta.