Install these axle shims between your landing gear and axles to insure that your tires track true.
Correct any misalignment of toe-in or toe-out in 1/4" increments.
1. Support the aircraft in level flying attitude.
This is sold per shim. So only 1 is included in P/N# 06-00930.
The shims are in degrees, so if you order a 1/4 degree shim that will give you a 1/4 degree correction. They are not adjustable.
That is the wheel / tire size. For the Cessna 180, you will need the 600x6.
You would have to check your axle dimensions using the PDF in the Documents section.
Yes that is the correct pattern.
The best way to tell would be to measure it with a micrometer.