Hello, Im new here, I own a Hardtail XC bike,
Frame: GT Zaskar
Fork: SID Rocx Shox Fork
Groupset: Full Deore
Brakes: Deore LX V-Brakes
Rims: Deore

After a friend told me about the Disk Brakes, i fell in love with it, it looked cool and has a pretty strong braking power and long lasting. it costs 70+ bucks SDG here to get a pair of disk brakes. I own a pair of LX V-Brakes and im not pretty sure whether to change them to Disk-Brakes. My Bike is pretty light and i like them to be compact. Im currently using skinny tires, and i usually cycle on the road and on grass(certain areas) sometimes. So, could anyone throw me some advice. Thanks.

Based on the type of riding you do I would say disc brakes are overkill. Save your money.

Unless you frequently ride in the wet, I agree with the above.

Disc brakes are for wanna-be's that have to brag to their friends that their bike has disc brakes. Cantilever systems offer plenty of sheer stopping power to send any DH'er over the bars.

What? I though you had Codes at one point in time? That seams over kill!! (sarcasm)

v-brakes suck in the wet. discs don't. if you're riding in wet/muddy conditions, discs > v-brakes. if you're staying dry and clean, stick with v-brakes.

I don't know what you're talking about.

Keep your v-brakes if you are riding in the road and grass. Discs will just be an expense for you. If you plan to start riding harder then consider discs.

I've got a friend who endoed on the road due to wet rims. He hit the brakes and nothing happened, so he gave it more power. By then his pads had dried the rims, so suddenly he had a more stopping power than he knew what to do with. Left a nice patch of road rash on his face.

Huh? Talking about what?

and... those few cycles the wheel must spin to have the rims cleared of water can be very dangerous on the trail. as a mountain biker you should know that.

I agree with the above. Besides, if you ride in the city, your bike will be less attractive to bike thiefs if it has v's.

RR

Nice CPR skeelz there Ricardo.

Disc bakes rock but most rotors are too large. Go with the smallest rotor you can find for better modulation. I use custom machined 2.5" rotors and adapters but you might have to settle for 4" as the bike companies basically only make really big rotors since they appeal to the "bigger is better" wannabe downhill crowd.

Big rotors suck though because they're too grabby for basically every application. I never need big rotors for the mountain biking I do, which mainly consists of riding as fast as I can along the edge of the local multi use path and bunny hopping dogs and children.

Something to keep in mind: You'll need a way to mount the calipers on the bike. That may mean a new fork for front mounting. I believe they may sell a kit to allow rear mounting to frames without lugs.