A group of top bank economists on Wednesday predicted  the economy will grow 2.5% this year despite global economic troubles. 
Commercial lending will rise 10% this year and 8% in 2000, and consumer  credit will grow 6% in 1999 and 5% next year, the American Bankers   Association's Economic Advisory Council predicted.   
  
"The U.S. economy survived significant shocks last year and still turned  in an unexpectedly strong performance," said Wayne Ayers, chief economist   at BankBoston and chairman of the council. "We expect that momentum to   carry into 1999, but fade somewhat in the second half of the year."     
The Federal Reserve Board will maintain the Fed Funds rate at 4.75% next  year, the group said. 
  
Conventional 30-year mortgage rates will seesaw between 6.61% and 6.63%  this year, and the consumer price index will hit 2.1% in the first and   second quarters before rising to 2.2% in the third and 2.3% in the fourth   quarter.     
Carl Tannenbaum, chief economist at LaSalle Banks/ABN Amro, said the  biggest threat to the economy would be a drastic stock market correction   which shatters consumer confidence. "The real risk isn't the loss in wealth   from a stock market correction but a change in consumer perception," he   said.