here are some tire specs to consider

205/55-16 S-03 Pole Position
Rim Width Range...... 5.50 to 7.50
Measure Rim Width.... 6.50
Section Width........ 8.4
Tread Width.......... 7.6
Overall Diameter..... 24.9

225/50-16 KDW
Rim Width Range...... 6.00 to 8.00
Measure Rim Width.... 7.00
Section Width........ 9.2
Tread Width.......... 7.2
Overall Diameter..... 24.9

So, if Pontiac is correct, I would rather have the
205/55-16 Potenza S-03 Pole Position tire


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