Can I go off-roading/greenlaing on my yamaha dtr125sm,,would it do anything to my bike?

Hi joe" isnt the S.Moto road tyres,,,? a change then make sense

Most people learnt off reading on unsuitable bikes, I certainly did. Your biggest problem, as Blackhat suggested, is that your tyres will make life interesting. On gravel tracks it will be less of a problem than on grass or mud. The only damage that is likely over normal use is mud and grit wearing parts like chain and sprockets, pads and discs quicker, and of course your bike will get dirty. The problems start when you drop the bike, which you eventually will, and break bits off it. Then of course comes the thorny question of where to ride, is it legal to do so, or are you going to get in trouble for it. Good luck!

Mark

Your bike... no. You? Maybe.... Just take it easy, don't push your limit too much.