<prompt> Kalima dǝga tǝmzǝyin: 2015 Bahrain GP2 Series dǝ shima kǝn buro salakye dǝwo suro lamarra kǝn tilon dǝwo saa 2015 lan sadǝna dǝn. Kǝlele dǝ kǝntagǝ April ye kǝn18-a kǝn19-a saa 2015 lan Bahrain International Circuit dǝn suro Sakhir yen tǝdin, kuru sha banazǝna kǝla lamar kǝre Bahrain ye dǝn.  <response>: 2015 Bahrain Grand Prix dǝ. Fasal drag reductionbe DRS dǝ na indin fǝtǝyin sa race dǝro: fal dǝ startfinish straight dǝga kǝltǝyin na darebe-a kǝn burobe-a, kuru kǝn indimi dǝ shima straight dǝga kǝn mewunti-a kǝn mewunti-a lan. Tire supplier Pirelli ye jiri indi tire ye dәga suro bikke dәyen suwudәna: jiri indi dry compound ye dә options kuru primes dawuye. 