2005 430LS tires need to be replaced between 20-25k ….I've purchased the most expensive tire to the moderately priced tire and it makes no difference. I used to get between 30-35k before needing to replace them. I've had wheel alignments at the time of the new purchase and that doesn't seem to make a difference....any idea?

 

You might have posted in the wrong forum, but is the wear on the inside??

If so , upgrade your lower control arm bushings for stiffer ones.