 Tún gbólóhùn tó wà nísàlẹ yìí kún un: 2015 Silverstone GP2 and GP3 Series rounds were a pair of motor races that were held on 3 and 5 July 2015 at the Silverstone Circuit in the United Kingdom as part of the GP2 Series and GP3 Series. O je igbohunsafẹfẹ karun ti akoko 2015 GP2 ati igbohunsafẹfẹ kẹta ti akoko 2015 GP3. Ọsẹ òpin eré ìje náà ṣètìlẹyìn fún : 2015 British Grand Prix. Àwọn ojúewé wọnyí jápọ: 