here is the tyre in question, the pic isn't the best the bulge is the whole top part of the tyre and was about 2 inches high , the camera angle isn't the best, the bulge did go down a lot when the tyre cooled.



spoke with dave at ears motorsport he confirmed the tyre pressures were ok, it was the soft compound I was using which caused it, I ordered 4 brand new harder compound slicks off him at a great price

steve