General topics » Groove worn on cam lobe

My name is Jeff and I’m new to this forum. My bike is a 2018 R 1200 RS and has 12,200 miles on it. I love the bike but have just run into some issues. Had a new front tire put on the bike 3 days ago and the person changing the tire pointed out a flat spot on one side of my rim. I’ve never hoped any curves, hit any objects or pot holes. Rim has no dings or scratches and old tire has no marks on it. Dealer where I bought the bike says this is a common problem and will cost around $350 or more to repair. I’m not accepting that and have started a complaint with corporate today.

This dealer did my 600 mile service and I did the 6,000 mile service. I was suspect of the type of people in their service department as there was 2 drain plug gaskets on when I removed the bolt. I also needed a cheater to break loose the bolt and also to remove the filter.

I had noticed pinging from the engine that started within the last 500-1,000 miles. Today as I went to do my 12,000 mile service I removed the left valve cover and was getting ready to check the valve clearance when I noticed considerable wear on the forward intake valve lobe (picture attached).

I put it back together and have an appointment at a different BMW dealer for the next day they are open. I’m expecting both my issues to get resolved or I will no longer be a BMW motorcycle owner 😕. My last BMW was a 1976 R 100 which had no problems the entire time I owned the bike.

As a side note: I would not run that engine any more. Parts from the hardened surface are now spread all over the engine, and will destroy every bearing.
Ask me, how I now ... :-(

Zitat von wessie im Beitrag #2

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Not sure how the law stacks up in the US but in the UK, with the wheel, you would need to establish there is a manufacturing defect. Difficult to do at 12,000 miles.

In terms of the cam lobe, in the UK, doing the 6k service yourself would give the dealer a lot of wiggle room to decline the claim, especially you are now over 12,000 miles as they only have your word that the service was actually done and used the correct oil and new, genuine filter.

Are things any different in Ca.?

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Zitat von DoctorJ im Beitrag #1

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Dealer where I bought the bike says this is a common problem and will cost around $350 or more to repair. I’m not accepting that and have started a complaint with corporate today.

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Just from your blurry photo it looks like that cam lobe was run without oil. So either you had a low oil level issue at some point, or there is a blocked oil delivery issue at that area. Good luck.

Zitat von Bob Aint Stoppin im Beitrag #6

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Just from your blurry photo it looks like that cam lobe was run without oil. So either you had a low oil level issue at some point, or there is a blocked oil delivery issue at that area. Good luck.

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Good luck with your claim regarding the engine... I am sure you followed Factory oil change procedures.. did you use recommended oils?

Regarding the wheel rim, I was told a long time ago when I had my Husqvarna Nuda 900R (BMW owned company ) wheel rim (two dents in rim from pothole) straightened by a fabulous company in Kent UK that my BMW wheels are quite soft and buckle easily http://www.motoliner.com/ (£90)
It is very difficult to prove who is to blame for wheel damage.

Good Luck with your quest

Zitat von DoctorJ im Beitrag #1

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pointed out a flat spot on one side of my rim. .

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This thread of another failure at 800 miles was posted on the MOA forum.

https://www.bmwsporttouring.com/topic/88...comment-1004774

Here are a couple pictures it’s hard to see and the damage is very minor. It’s just past six o’clock. Probably won’t get it fixed but may look at new stronger rims or maybe a new bike. Depends how this matter is handled on BMW side.

Peace

DoctorJ

Hope you get somewhere with the cam, that's faulty case hardening on one lobe. If it were a lube issue, there should be several showing the same damage. $350 is a bit steep for straightening that rim, I would expect to pay less than half that at a UK specialist. Are you sure that want a stronger rim? I suspect that they're made out of a maleable grade so that they deform on impact, rather than break.

Zitat von DoctorJ im Beitrag #12

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Here are a couple pictures it’s hard to see and the damage is very minor. It’s just past six o’clock.

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I wouldn't worry about the wheel, I would just ride on. I have a more worse looking spot on my Sprint ST 996's wheel and have done 70,000 miles with it that way.
The cam lobe, whew, I would get that repaired ASAP.