145R12 sized tires are mostly used on trailer and light truck applications, and are designed to carry heavy loads while also maintaining and offering a smooth ride. These tires need to be strong for higher load carrying needs and are required to withstand excess lateral and braking force. Look into the Kenda Karrier, Carlisle Radial Trail RH, or Atturo ST200 if you’re looking for a great 145R12 tire for your trailer, or the Federal Ecovan ER02 and Radar Argonite RV-4 if you need a set of 145R12 tires for your light truck.