Hi,
I have a hybrid type bike which i mostly ride on railway paths and cycle routes at the moment but would love to try some more off road type mountain bike trails.
Do you think my bike would be suitable for base level trails? Or will i need to make modifications? Or get another bike (which i'm not sure i can afford)

What i have currently is an 18" Carerra Subway 1 WSD with chubby 2.1 StoneTrax tyres because the city tyres were basically useless if there was a stone or a sniff of moisture on the ground.

many thanks.