[Rotherd31]

Originally Posted by bimmer_335

not true...

unless you have option 840 you are limited to 130mph regardless of tires. Weird yes. But i've had detailed discussion with BMW about the absurdity of putting 186MPH tires on and then limiting top speed top 130MPH even with sport pkg.

Just like I said in post #2 above. When I built my M550 in May, 2018 I wanted the non RF Pilot SS tires. When I added them, the build auto added the 840 option. I knew that it would auto add the 840 option after I opted those tires. There was no means for me to add the 840 option and then choose the tires that I wanted.

Think liability here, because that's what is driving some of the issue. A manufacturer would never knowingly equip a car with tires that had a lower or even speed rating than the car was capable of attaining. A sustained higher speed than the tire is rated presents the "possibility" of a catastrophic tire failure/loss of control/accident/injury or death. Needless to say that would open the door to law suits. They will always opt for a higher speed rating as a buffer, in this case an approximate 30 MPH buffer.

[RLSinCO]

The other day I floored it in my M550 and the car was pulling like a jet fighter...right until it hit 130 mph and then everything stopped LOL. It is a very noticeable wall you run into.

Odd thing is, I could swear my ActiveHybrid 3 would go to 135 before it was limited...
My car came with the German manufactured 19" Goodyear Eagle all seasons - I assumed those were good to 150 for a short run as they were equipped on an M550i but perhaps not.

[Rotherd31]

You might check the speed rating on the sidewall. If it is a Y rating, (186) it still might not satisfy BMW's high speed handling requirements. All season tires have a different tread pattern and a different rubber compound than summer only performance tires.

[AlteBMW]

Originally Posted by Rotherd31

Just like I said in post #2 above. When I built my M550 in May, 2018 I wanted the non RF Pilot SS tires. When I added them, the build auto added the 840 option. I knew that it would auto add the 840 option after I opted those tires. There was no means for me to add the 840 option and then choose the tires that I wanted.

Think liability here, because that's what is driving some of the issue. A manufacturer would never knowingly equip a car with tires that had a lower or even speed rating than the car was capable of attaining. A sustained higher speed than the tire is rated presents the "possibility" of a catastrophic tire failure/loss of control/accident/injury or death. Needless to say that would open the door to law suits. They will always opt for a higher speed rating as a buffer, in this case an approximate 30 MPH buffer.

Good point. The lawyers win again (I am a lawyer). There are many things in these cars that are set up to avoid or ameliorate manufacturer liability. This one is a no brainer for the company to listen to the lawyers (you should always listen to your lawyer)

[530iDriver]

Originally Posted by Sheharyar_rr

Well I'm getting the Flash tune soon which will get rid of the ridiculous 130mph speed limiter

That's fine but please take it to the track.

[Barry9020]

Originally Posted by Sheharyar_rr

Well I'm getting the Flash tune soon which will get rid of the ridiculous 130mph speed limiter

if you dont mind me asking what company is the tune from? id get the tune just to get rid of the 130 limiter lol

[Sheharyar_rr]

Originally Posted by Barry9020

if you dont mind me asking what company is the tune from? id get the tune just to get rid of the 130 limiter lol

Going with DME tuning stage 2 flash

[swillet67]

My 2018 M550 is NOT limited at 155mph. I hit 159 yesterday and it was still going. But i got scared..

[2022M550i]

Originally Posted by swillet67

My 2018 M550 is NOT limited at 155mph. I hit 159 yesterday and it was still going. But i got scared..

Yeah...I totally get the nervous part. The older I get, the less invincible I realize I am. Now, I get concerned about mechanical failure...blow outs....etc.

I see those guys on youtube, AutoTopNL, doing wide open throttle blasts on the autobahn and I cringe. They're doing this in other peoples cars where they don't know the quality of the work done to them. I would be inspecting every inch of those cars before going anywhere...maybe they do and they don't video any of it.

[NGT2]

Originally Posted by AlteBMW

Fair enough. I wonder how many here have ever gotten up to 155? Highest I ever got to on an open road was 110. That was in my 12 cylinder 850 some years ago, and it was loafing.

I've been up around 105 passing people on the highway. Also when my kid said he was about to pee in the back seat (he's 5 years old) we were 100-105 getting to the exit.

It wasn't straining at all. Had plenty of pull and plenty of power I hadn't even tapped. I've actually never floored it because I've never needed to.

And that's in a stock 2018 540i.

[Bayernzeit]

Originally Posted by AlteBMW

Just out of curiosity, what is the every day difference between 130mph limit and 155mph top limit. I do not see M550 as a track car but maybe I am wrong.

For every day driving, I don't see why it would matter. The highest speed limit I have encountered is 80 mph. I understand people don't drive at the speed limit and that having the ability to go faster IMHO can actually be a safety feature but 130 is 50 mph higher than the highest limit and ought to be more than enough. Am I missing something?

Originally Posted by AlteBMW

Just out of curiosity, what is the every day difference between 130mph limit and 155mph top limit. I do not see M550 as a track car but maybe I am wrong.

For every day driving, I don't see why it would matter. The highest speed limit I have encountered is 80 mph. I understand people don't drive at the speed limit and that having the ability to go faster IMHO can actually be a safety feature but 130 is 50 mph higher than the highest limit and ought to be more than enough. Am I missing something?

You might notice it in Germany depending on your driving style. My prior BMW here ran right up to 155 (really 160 flat out - just like BMW to undersell performance). The 540xi loaner I'm currently in is limited to 130 with the non-HP tire package, regardless of the m-sport package. Locking in cruise control at 120 happens here on the relatively empty autobahn by my home. Always a little disappointed when it just stops at 130 - clearly plenty of steam left. The car on order won't have that issue (Z4 M40i). Still an amazing ride, and yes, I acknowledge the difference wouldn't mean a damn if I was back in the States. Here's a pic of the US-spec 540xi living it's best Bavarian life.