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Old 06-28-2022, 04:59 PM   #95 (permalink)
Blacktree
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Join Date: Dec 2011
Location: Florida
Posts: 258

The Prius Experiment - '07 Toyota Prius Base
90 day: 58.52 mpg (US)
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Quote:
Originally Posted by Drifter View Post
Tire/wheel alignment is interesting too. My hypothesis: Older bushings flex more which allows the alignment to change as road forces are applied.
The tire wear pattern seems to support this. The tires have more wear on the outside edges. At first glance, it may look like underinflation. But the tires were inflated properly. And that wear pattern is only on the front tires.

So the worn suspension bushings were allowing extreme toe-in changes during acceleration and braking. That resulted in alternating inside / outside edge wear, as the tires shifted back and forth.

The tires still have plenty of tread left. So I'll increase the tire pressure a little bit, to balance out the wear pattern. And I'll move those tires to the back of the car. That should help get more usable life out of them.
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