Hello together! I know that the Zetti is rather built for the country road, is also more fun. But what can it be that I have never reached the registered top speed of 250 with my small 3L-QP before? Until suddenly, I had 250 according to the speedometer for a short time. But it went down very strongly… Had just my QP for inspection II. Air filters and spark plugs were renewed. As engine oil I have Mobil1 0W-40 (instead of Castr Ol 0W-30). I tried it yesterday with a free, flat motorway again, but unfortunately it doesn’t work somehow. I managed almost 240 km/h according to Tacho. Climate was off, outside temperature was about 10 degrees. Is it because of the (standard) mixed tyres of BMW ex factory. The rims are 7.5 and 8.5 inches wide with tires 225/45 ZR17 or 245/40 ZR17. Do you have an idea what it might be about? What about you who drive a standard 3-litre QP? Thanks & Greeting from Leipzig ! patr1ck