BMW G 310 R Mileage

I owned a 310 gs. First service cost was 5500 @ 1000 km, second was 8000 rs @ 10000 km, & upcoming third will be around 15000rs @ 20000 km. Done a regular service & chain replacement @ 15000 km for 8000 rs. Now I have to change front fork oil seal and oil with third service, that will cost 3800 rs. I have changed back breakpads twice & front break pad once, that costs me total of 6000 rs. I have spent a total amount of 46300 rs for 20000 km/ for two years as maintenance cost. I think it is a very big amount for a 300 cc single cylinder motorcycle.

Throttle body cleaning- 2100/- Rear Brake pads - 1300/-Chain adjusting - 380/-Spark plug replacemnt - 725/-Clutch cable replacment - 1340/-BMW in the name of quality they cost you a bomb, in my 5 years of experience owning a 310GS, a lovely bike, i hate BMW service centre.The have hired guys who just replaces parts, they have not hired technicians.the worst part is they don't like people servicing their bike themselves.... so when you go to service centre to get the to remove OBD 2 based service reminder they straight up refuses to do so, they will only do when you put your bike for regular service.I understand that machine needs care and regular upkeep and most of the owners are willing and doing so but at what cost? Its based on 310RR all part are made in India Shared between 4 bike across two brands yet this attitude?I used to dream and wanting of having another BMW in my garage but after 5 years of worst after sales experience, no more.

Its actually 15 w50 recommended for g310 series bikes

The G 310 R is powered by a BS6-compliant 313cc, fuel-injected, liquid-cooled, single-cylinder motor which makes 34PS at 9,500rpm and 28Nm at 7,500rpm, the same as before.