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Your warranty won't get voided due to aftermarket rims. The only time a part of the warranty can be voided is if a specific aftermarket part adversely affects a specific part of the car. For example, if you add a spoiler and your brakes fail, it's not related & they can't void your warranty for adding an aftermarket spoiler. They need to prove that the part caused the failure.
With that said, I think most people agree that larger wheels look better on the xB. And if you want to roll your wheels/tires into the financing go through the dealer, otherwise better deals can be found elsewhere
Your warranty won't get voided due to aftermarket rims. The only time a part of the warranty can be voided is if a specific aftermarket part adversely affects a specific part of the car. For example, if you add a spoiler and your brakes fail, it's not related & they can't void your warranty for adding an aftermarket spoiler. They need to prove that the part caused the failure.
With that said, I think most people agree that larger wheels look better on the xB. And if you want to roll your wheels/tires into the financing go through the dealer, otherwise better deals can be found elsewhere