Weird clicking noise from front right wheel - low speed

[Blanketnam]

Hi All

My 2011 yaris zen 3 hatchback has now started making a strange sound when driving very slowly. It almost sounds like something is rolling around in the wheel rim. It's a metallic sound.

But, I only hear it at very low speeds, like below 15kph, if I roll my window down (right hand steer, front right wheel makes the noise).
I can hear it more clearly if someone else drives and I walk next to the car.
Could it be something inside the tire? It doesn't have a puncture so I can't think that something is inside the tire.

Any help would be appreciated!

[tmontague]

Could be a stone stuck in your tire or brakes. Check your tire first than remove the. Wheel and inspect the brakes. I'd also check for play in your wheel when the car is liften off the ground

[Blanketnam]

Thanks!
I removed the wheel, and found a small stone inside the brake disk! There is a metal plate behind the disk that prevented the stone from coming out. Forced it away gently and spun the disk until the stone came out.