Can we change the 18-inch tyre of rear side Passion Pro to a larger one without affecting the mileage of the vehicle?

You may have a bigger tyre or wheel installed in the Passion Pro but not without the side effects. This may lead to a drop in the performance, fuel-efficiency figures, and handling of the bike. We would suggest you to exchange words with the nearest authorized service center for more details regarding the same. Follow the link and select your city accordingly for [service centers@https://www.bikedekho.com/showrooms/hero