Me and Hydbiker visited Suzuki showroom to check out GS150R. Was speaking to the sales rep while waiting for KP.

He said "this bike is more stable than other bikes"

When i asked how, he says "since the disc is to the left side and the rear drum is to the right side the weight distribution is equal and hence its more stable than anyother bike in the country"

I was like

I asked him to quit the job and join Suzuki R&D so that he can make more such invention for which he was blushing

There is no difference if the disc is on the left or right. The braking force is in the end distributed to the centre of the wheel and the wheel slows down when braked.
Each maker has their unique way of making their brake and drive train layout.
Most of the Indian bikes have a left side drain chain config, however most italian and non-jap bikes have right sided layout. Does that mean, the bike will pull to a side?
The design interest of each maker is unique in their own ways.
Suzuki's brakes are made by a company called Tokico, Japan.
TVS-Suzuki introduced their first disc brake model, the TVS-Suzuki Fiero and the Tokico design disc brakes were locally produced in india by M/S TVS Girling aka Brakes India Ltd.
TVS continued their left side disc approach after the JV broke on the TVS Fiero and Fiero F2.
later they changed their interest to right side disc from the days of the Victor GLX 125. SO did the Apache and RTR.
Suzuki is now independent. The Suzuki Zues and GS150 is based on their GS platform sold abroad. All have Tokico made Left side disc. So to locally produce them, the design was outsourced to Pricol India Ltd.
There is no technical advantage of having a right sided disc or vice versa.
Hyosung is a Suzuki partnered company and hence chose the left side disc approach. Yamaha and Honda always make right side disc configs.

Cheers,
Joel

Satish, you might have made that poor salesman blush but that fellow said exactly the same thing that has been told to him by M/s SUZUKI MOTORCYLE INDIA PVT. LTD. and that is coming from someone who has been working with a Suzuki Dealer.

I for sure dont know the exact reason but I guess the left or right brake might have some or the other relevance if None at all. Peace.

that's a good set of observations Joel. But I was wondering why the R125 has a left side disc... scratch ... scratch... scratch... ouch, the head hurts!