Depends on your wheels, how low the car sits, how much camber you run, etc.
First, to even consider this you need 7" & 8" wheels, not the more typical 6" & 7".
If you have 16x8 for the rear, the 245/45 is pretty straightforward.
But the 225/50 on the front will be tight at best. You may need to adjust the ride height, dial in more negative camber, roll the fenders, or a combination of these.
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2018 718 Cayman 2.0
Priors - '72 911T coupe, '84 911 Carrera coupe, '84 944, '73 914 2.0
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