Quote:
Originally Posted by KevinBRZ
1. These aren't Prius tires, they are a different Primacy tire.
2. Keeping the car exactly the same, but with wider tires, makes almost no difference. The weight is distributed the same on any size of tire, so the contact patch will remain virtually identical, just a different shape. If you size the tire properly for the car, then yes, it can make a difference. Just slapping on a 255 tire on a stock BRZ will not help.
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Correct. What may help is fitting tires with better tread compound. It would be hard to find tires with a worse tread compound than stock.
Although the stock tire is the HP (high performance? Really?) version of the Primacy its still pretty much a Prius level tire. The Prius actually fits a low rolling resistance version. You definitely don't want those.