Spoke sound when driving

[YodaBird]

The last time I drove there was no sound which was a few days ago, regular car sound. Today after quite a bit of snow and -20C weather the car has a thumbing sound as though there is a spoke in the wheel, it was quite loud today, the tire pressure is good, the rims look fine, what is it ?

[matti]

The last time I drove there was no sound which was a few days ago, regular car sound. Today after quite a bit of snow and -20C weather the car has a thumbing sound as though there is a spoke in the wheel, it was quite loud today, the tire pressure is good, the rims look fine, what is it ?

Frozen slush chunks got inside the hubcap?

[YodaBird]

I read it could be a flat bump when driving slow you feel it more; or air is leaking out, I haven't checked the air pressure in two months, last time I checked it was around 31 psi.

[YodaBird]

The problem was a large screw in my tire; it costs me $25 :( What is the stuff they use to fill a tire hole that is roughly the size of my finger at an Official Toyota Shop ?

On the tire with the screw, lost half my recommend PSI, it happened on Monday that I know fairly well.

SOLVED !