Hi John
I have a 04 plate too. It originally came with Hankooks but when the alloys were replaced due to pitting they had Kumho 798s fitted. These have a far better tread pattern, they are quieter, grip better and have lasted far longer that the Hankooks. Other than that all the same size and pressure. Reliability on the Sorento other than the Pitted rims and a heated rear screen element that was replaced under warrenty has been great and pulls like a dream
Hope this helps
Von Ryan