Originally Posted by 97_RLer

When you consider a different tire size, you must keep the overall diameter of the tires the same or at least within 3%. Otherwise, it will give a negative affect on your vehicle's gear ratio. I would strongly recommend it within 1% difference though.

If your OEM tire size is 215/50/16, the 225/50/17 is 5.38% bigger in diameter, so it is not the right size. As I told you, 235/40/17 is a good choice in terms of wider, safer, cost-effective, and variety of stock availability. The diameter difference with OEM tire size is just 0.25% smaller. it means that your speedometer indicates 60.1 mph for the tire size, when 60.0 mph for the OEM size. An alternative size is 215/45/17 which is 0.61% bigger in diameter and 59.2 mph in speedometer if you wanna keep it the same width to OEM.

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1010tires.com Tire & Wheel Tech