I had a piece of metal pierce into my rear tyre (motorbike) at an angle, rang up my trusty wheel fitter and he said as long as it's not losing pressure it's fine as it hasn't gone into the inner membrane that holds the air in, i may have dabbed at 150 on my private runway yesterday and it's absolutely fine, I think all these people telling you it might blow out and not to do high speeds are over-reacting a bit, it's a small scuff, if it balloons in anyway then get it changed ASAP, but it's fine now.