[Geradeaus]

I've done a fair amount of touring in my 2021 Z4 sDrive30i since taking delivery of it in Spartanburg on March 25th, 2021. I'm thoroughly enjoying it whether tearing up the miles on the interstates or tearing up the back roads in the mountains. What a great car!

If I ever sell it I'll advertise it as mostly highway miles and use this picture to validate that claim. Almost 50mph average over almost 31,000 miles. I'd be surprised if anyone can beat that average speed!

Just got my third oil change and the brakes are at 7mm rear and 10mm front. BMW will change the brake fluid Jan 2024 which is great as the maintenance plan ends March 2024. My tires are approaching 30k miles and the rears have perhaps another 2-3k on them. I certainly won't be getting the 45k miles Michelin warrants them for but then I can't do a full rotation on them as the fronts are narrower. These are the Michelin Pilot Sport All Season 4 tires. They've been great.

Oh, and the average MPG over the 30,762.2 miles is 34.9 mpg!

[goat30i]

Ha, thought I was closer to your avg. . . 80k miles, but only 45.2MPH. Though my dash did show 112F when I took that pic a week-ish ago.

[StanDiego]

Originally Posted by Geradeaus

If I ever sell it I'll advertise it as mostly highway miles and use this picture to validate that claim. Almost 50mph average over almost 31,000 miles. I'd be surprised if anyone can beat that average speed!

Oh, and the average MPG over the 30,762.2 miles is 34.9 mpg!

Bravo!!! Well done! I'm only averaging 28 MPG actual calculated (as opposed to the car reporting 30.6) over my first 4K miles with an average speed of 39.6 MPH. I'll never achieve either of your numbers because I always take the "other vehicle" for highway driving. The Z4 is limited as much as possible to backroad driving. Thankfully, navigation apps these days allow me to configure "avoid highways" as an option, sometimes significantly increasing the travel time but frequently also the pleasure quotient. If I'm time constrained, I take the "other vehicle" unless the backroad time is less than or equal to the highway time.

[stlcdr]

I'm at 48.2 mph average over ~3200 miles. However, just over 25.2 mpg over that range.

[Bimmerfun82]

33.3 mph at 21.1 mpg over 5000 miles. Definitely having fun, and never worry about gas mileage. 5000 miles on the tesla for no gas, 90 mpge? Prior was M3 over 9000 miles at 16.8 mpg, so relatively much improved.

[tracer bullet]

Originally Posted by Geradeaus

the brakes are at 7mm rear and 10mm front

You are probably right, and it is probably fine, but front brakes typically wear faster than rears. It's interesting if the Z4 reverses that.

[stlcdr]

Originally Posted by tracer bullet

You are probably right, and it is probably fine, but front brakes typically wear faster than rears. It's interesting if the Z4 reverses that.

Hmm, this is a common complaint on the ford expedition forum, too. Rears wear faster than fronts…

[GerryC]

Originally Posted by tracer bullet

You are probably right, and it is probably fine, but front brakes typically wear faster than rears. It's interesting if the Z4 reverses that.

The front brakes do most of the stopping and thus wear faster in straight braking. With stability control and traction control there's more wear on the rears from those systems. So depending on your driving (twisties, stop & go traffic, rain, highway) it's becoming more common for the rear brake pads to wear faster.

[Horseman]

I definitely have NEVER been able to do that haha! Then again, I don't drive on the high way enough to attempt it. Think it has something to do with the fact that when I took the M40i out for a test drive the sales agent had made mention that I drive in a lot more fun way compared to her boyfriend/fiance/husband (I forgot what she said lol) who owns an M3. Most I've been able to get out of it was about 35 MPG.

[hilld]

I am pretty sure the front pads are thicker than the rears when new. So the 3mm difference could actually be even wear, at the speeds the OP is going, maybe the brakes never get used.

[Westside Guy]

Originally Posted by Horseman

I definitely have NEVER been able to do that haha! Then again, I don't drive on the high way enough to attempt it. Think it has something to do with the fact that when I took the M40i out for a test drive the sales agent had made mention that I drive in a lot more fun way compared to her boyfriend/fiance/husband (I forgot what she said lol) who owns an M3. Most I've been able to get out of it was about 35 MPG.

Out of curiosity, how old was your salesperson?

Believe it or not, I have never driven more than 40-50 miles with my M40i as we have used my wife's 228i with the much larger trunk for really long road trips. However using Adaptive mode for those 40-50 miles trips I have achieved 34+ mpg. If I were to take a longer trip with my M40i which we plan on doing this summer by packing light I would probably average somewhere in the very high 30's.

[Westside Guy]

Originally Posted by hilld

I am pretty sure the front pads are thicker than the rears when new. So the 3mm difference could actually be even wear, at the speeds the OP is going, maybe the brakes never get used.

Out of curiosity, can someone (BMWGirlFL) confirm this point?

[Horseman]

Originally Posted by Westside Guy

Out of curiosity, how old was your salesperson?

Believe it or not, I have never driven more than 40-50 miles with my M40i as we have used my wife's 228i with the much larger trunk for really long road trips. However using Adaptive mode for those 40-50 miles trips I have achieved 34+ mpg. If I were to take a longer trip with my M40i which we plan on doing this summer by packing light I would probably average somewhere in the very high 30's.

This sales agent (helping out my normal one) was Vietnamese and as someone who has an Asian wife and has spent some time in Korea, it's not always easy to tell how old they are. lol If I had to guess... I'd say mid 30's. Usually asians look alot younger than their age, but in sales profession, that is usually not the case.

If I would STOP messing around in the car, I could probably do better, but honestly Z4 is either used for quick trips, going to business meetings, going to Cars and Coffee or just driving when my wife's car isn't available or if she needs it. If I actually drove in Eco Pro, I'd probably get better gas mileage, but I average 29 MPG on a regular basis.

[stlcdr]

Originally Posted by Horseman

... If I actually drove in Eco Pro, I'd probably get better gas mileage, but I average 29 MPG on a regular basis.

If you drove in Eco Pro, you'd probably wonder why the gas pedal is now broken: an Amish buggy has more horsepower

[Horseman]

Originally Posted by stlcdr

If you drove in Eco Pro, you'd probably wonder why the gas pedal is now broken: an Amish buggy has more horsepower

Oh I'm aware. haha... I only use it when I'm cruising on the highway. Agreed... it is sllllllllllllllllllooooooooooooooow haha