A B767-300 FLT CREW ABORTED THEIR TKOF AT EDDF BECAUSE OF EXCESSIVE VIBRATION. ACFT CHKED OUT NORMAL; CREW DETERMINED VIBRATION WAS DUE TO ROUGH RWY SURFACE.

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ON TKOF ROLL FROM RWY 7L AT EDDF AT ABOUT 70-75 KTS; FRANKFURT'S ROUGH RWY MADE ME WONDER IF SOMETHING WAS NOT RIGHT WITH LNDG GEAR OR TIRES. I BEGAN THE ABORT BELOW 80 KTS. AS SOON AS I BEGAN TO SLOW TO TAXI SPD THE RWY SMOOTHED OUT AND THERE WAS NO NOTICEABLE BUMPINESS. FRANKFURT'S RWYS ARE KNOWN TO BE LESS THAN PERFECTLY SMOOTH IN PLACES. AFTER EXITING THE RWY WE ACCOMPLISHED THE AFTER LNDG CHKLIST AND HAD THE GEAR; BRAKES; AND TIRES INSPECTED. WITH A THUMBS UP AFTER THE INSPECTION; WE CONSULTED THE ABORTED TKOF SECTION OF THE QRH AND THE BRAKE COOLING CHARTS. WE NOTED THAT ONLY 10 MINS OR LESS COOLING TIME WAS REQUIRED UNDER OUR CONDITIONS. (WE ULTIMATELY HAD OVER 30 MINS.) BTWN TKOF ATTEMPTS TWR 'TURNED THE ARPT AROUND' AND WE TAXIED TO RWY 25R. WE ACCOMPLISHED THE BEFORE TKOF CHKLIST AGAIN; GOT NEW TKOF DATA; AND BRIEFED THE NEW SID. TKOF WAS UNEVENTFUL AND PAVEMENT WAS NOTICEABLY SMOOTHER AT THIS END OF THE RWY. WE HAD DISCUSSED HOW BUMPY EDDF RWYS WERE THE DAY BEFORE AND PRIOR TO TKOF AS WELL. BUT THE ROUGH PAVEMENT STILL STARTLED ME ENOUGH TO STOP THE TKOF. SUPPLEMENTAL INFO FROM ACN 704641: ABORTED TKOF IN EDDF ON RWY 7L DUE TO ACFT SHAKE ON ROLL. MAX SPD WAS 75 KTS AND REJECTED TKOF DID NOT ACTIVATE. AS WE SLOWED TO TAXI SPD SHAKE WENT AWAY. WE CLRED RWY AND CALLED FOR CFR TO CHK US OUT FROM THE OUTSIDE. I CHKED THE BRAKE COOLING CHART FOR REQUIRED COOL DOWN TIME AND DETERMINED IT TO BE 10 MINS. CFR TOLD US ACFT LOOKED GOOD ON THE OUTSIDE. AT THAT POINT ARPT WAS TURNED AROUND AND WAS DEPARTING RWY 25R. WE TAXIED TO RWY 25R AND DEPARTED NORMALLY. ELAPSED TIME FROM ABORT TO DEP WAS 30 MINS. WE CONCLUDED THE SHAKE WAS DUE TO VERY ROUGH RWY.