I have been using them for the last 3 years on my BA Falcon. They are excellent value for money. I need them for my 5.4l 3v or else driving in the wet is a death wish. I find that they are very PSI sensitive. I have set mine to 34psi cold, which seems to be the best balance for comfort and cornering. If you look after them, get them aligned and balanced regularly, they should last 30-40,000kms. I neglected one set, and they lasted 20,000kms.....