Quote:
Originally Posted by Denalio
What will this mod do to your alignment? camber and toe settings, tire wear etc.?
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After installing new springs, you MUST get a four wheel alignment done. This adresses the camber and especially the toe settings. My service rep had to manually set these settings to the factory recommended settings, and although it is not physically possible to achieve those numbers with lower height, the numbers were very very close. In fact he printed off the settings after the alignment and the difference in numbers was negligible. You can not 'feel' any difference if the camber or toe is off; the only way to check is by looking at the numbers after an alignment. This gets a little more complicated if you have the active steering and dynamic handling pkg, and of course more expensive than a regular alignment.
If these settings are correct, you should get 'normal' tire wear. Unfortunalely tire wear gets worse as the tire size gets larger. So 21" will probably see more wear on the inside than a 20" would, especially since they can't be rotated! I just pulled off my 20's and replaced them with 21's but didn't see any wear on the tires at all. In fact they still look new afer driving for most of the summer...