Yes - eventually you will hear a creaking sound followed by the bridge parting company from the body of your guitar.
The tension in a steel string (25-30 pounds) is more than twice that in a nylon string, and even if your bridge doesn't come away from the body, then you're at risk of warping the neck of your guitar. Don't be tempted to change all the strings from nylon to steel, either - you'll get the same results, just faster.
Best,
A :-)
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go on - put 'em on, heavy guage steel ones.
Then post the viedo of your guitar exploding!
Go get some proper strings for it, like Alan has suggested
All the best
Matt
Ok now I am confused.
So your guitar is a steel string?
"bronze" are steel strings. They are a mixture of bronze and nickel.
Also, I would change all 6 strings if I had to change one.