I know this has been discussed several times. Many have switched from the 200 rear to the 190 rear and have stated no ill effects encountered.
For all the HP4 owners and the 2015 RRs with forged wheels - many of us either have already switched to the 190 or have been thinking about doing it - many more options in the 190 size, and pricing is much less.
In my owner's manual, it states that you must have the ECM calibrated for which size tire you are running - to have all the electronics work correctly.
So put that aside for a minute - I was speaking to the service manager earlier today at my dealer. I was setting up some service work for my K1300S, and I asked the question - "So tell me the truth about the rear tire size for RRs having to be calibrated for the tire you are running"?
He says it is genuine - they have had bikes in the shop that have swapped sizes, and the traction control and DDC have faulted out and are not evening working.
So I am still thinking sure that is what he is going to say - then he said let me read you the bulletin BMW sent out at the end of March 2015 regarding changing tire sizes on the RRs.
At this time, there is no way to calibrate the ECM for different tire sizes - this can only be done at the factory - the ECM is coded then with the correct code for the tire size the motorcycle was built with and is VIN specific.
Changing tire size will fault out the DTC and DDC systems.
So there you have it - call your dealer and ask about the bulletin - believe it or not, that is up to you.
I was passing along information I received from my dealer this morning.
The bottom line, if it matters, is that the 200 tires are much more expensive than the 190s.
For all the HP4 owners and the 2015 RRs with forged wheels - many of us either have already switched to the 190 or have been thinking about doing it - many more options in the 190 size, and pricing is much less.
In my owner's manual, it states that you must have the ECM calibrated for which size tire you are running - to have all the electronics work correctly.
So put that aside for a minute - I was speaking to the service manager earlier today at my dealer. I was setting up some service work for my K1300S, and I asked the question - "So tell me the truth about the rear tire size for RRs having to be calibrated for the tire you are running"?
He says it is genuine - they have had bikes in the shop that have swapped sizes, and the traction control and DDC have faulted out and are not evening working.
So I am still thinking sure that is what he is going to say - then he said let me read you the bulletin BMW sent out at the end of March 2015 regarding changing tire sizes on the RRs.
At this time, there is no way to calibrate the ECM for different tire sizes - this can only be done at the factory - the ECM is coded then with the correct code for the tire size the motorcycle was built with and is VIN specific.
Changing tire size will fault out the DTC and DDC systems.
So there you have it - call your dealer and ask about the bulletin - believe it or not, that is up to you.
I was passing along information I received from my dealer this morning.
The bottom line, if it matters, is that the 200 tires are much more expensive than the 190s.
