This morning i got to work to find i had a flat tyre so had to use that stupid tyre weld rubbish (luckly tyre was quite worn) and since using the tyre weld i have had a loud grinding/whirring noise(hard to explain)which is intimitant when breaking. Any ideas guy at my local garage said give it a few days maybe a week and see if it stops. But the guy dusnt know what it is . Also car has had new pads just before i bought it.