Wheel size bmw e65 730d

Hello together I have the following problem, I bought me chic new rims and after the change drive about after 1klm, there was an error message. REIFENPANNE I think it is because of the size I have now on it, front axle 245/30 r20 rear axle 275/30 r20 Can you help me and tell me where the error is. Greeting Eugen