[X3FanDetroit]

Newbie to XBimmers. Would greatly appreciate some input on this issue. I have a 2011 X3 28i with the standard 8 speed. After a recent hard shift the shifting returned to normal. However, I think I'm running at higher rpms than prior to the recent hard shift. My memory might be playing tricks on me but I thought at 70 mph that I WAS running just below 2000 rpms just like my other cars. However, now I'm running at 2200 rpms steady at 70 mph. Does anyone have a similar 6 cyl, 8 speed and have an idea how many rpms you run at 70 mph?

BTW the geniuses at my dealer and at the national BMW site have no idea what it should be and have not been any help in solving my issue.

Thanks!!

[Mingstar88]

during my recent road trip from Toronto to New York. I have notice that when crusing 110-120km/h, it's been a littlke over 2000 rpm consistantly. i wonder what factors plays into that. like you, i swear i was able to keep it 2000rpm when driving at 110km/hr(just under 70mph). road condition ie rougher road?, different tires? i also have racechip installed, that might play a factor? i feel with 2000rpm, it gets best mileage.

there are my thoughts, hopefully we get some response from fellow X3 owners

[02420X3]

My 35i shows about 1900 RPM at 70 MPH in Normal mode.

[Tjalle]

I suggest you check by going to Manual - you should be cruising on 8 in Auto at 70 mph.

If you are on 7 at 70 mph, you have a bit of a problem.

If you are on 8, and still too high revs, you can be in deep shit

[Max Well]

Welcome to the forum, X3Fan. Last year I studied RPM, MPG, HP, Torque, and % Engine Load vs Speed (mph) for our two X3 35i models in the 'Horsepower & Speed' thread ( http://x3.xbimmers.com/forums/showthread.php?t=1004702 ). As 02420X3 indicated, RPM at 70mph was around 1900 for us as well.

I was hoping others might contribute similar data for the 28i (and all engine types actually), but so far I haven't seen such. For what it is worth, I'm reattaching the 35i Summary chart here, but I am not sure how well it translates to the 28i variant.

[X3FanDetroit]

Originally Posted by Mingstar88

during my recent road trip from Toronto to New York. I have notice that when crusing 110-120km/h, it's been a littlke over 2000 rpm consistantly. i wonder what factors plays into that. like you, i swear i was able to keep it 2000rpm when driving at 110km/hr(just under 70mph). road condition ie rougher road?, different tires? i also have racechip installed, that might play a factor? i feel with 2000rpm, it gets best mileage.

there are my thoughts, hopefully we get some response from fellow X3 owners

Thanks for your input Mingstar. I'm getting some good suggestions.

[X3FanDetroit]

Originally Posted by 02420X3

My 35i shows about 1900 RPM at 70 MPH in Normal mode.

Thanks for your feedback 02420x3. I think my 28i ran around 1900 rpms also. One of my thoughts is why would any manufacturer have 8 speeds and run over 2000 rpms at cruising speeds? Doesn't make sense. I'm getting some good suggestions from the forum. Thanks again.

[X3FanDetroit]

Originally Posted by Tjalle

I suggest you check by going to Manual - you should be cruising on 8 in Auto at 70 mph.

If you are on 7 at 70 mph, you have a bit of a problem.

If you are on 8, and still too high revs, you can be in deep shit

Thanks for your input Tjalle. The dealer tested it and said it was shifting to all 8 speeds. I'm still not convinced something isn't wrong. Why would it have 8 speeds and can't get under 2000 rpms at cruising speed like my other cars and everyone of my friends cars. Doesn't make sense.

A friend made the same suggestion as you-try shifting manually. I think I'm going to try that tomorrow. Good suggestion. Thanks again.

[X3FanDetroit]

Originally Posted by Max Well

Welcome to the forum, X3Fan. Last year I studied RPM, MPG, HP, Torque, and % Engine Load vs Speed (mph) for our two X3 35i models in the 'Horsepower & Speed' thread ( http://x3.xbimmers.com/forums/showthread.php?t=1004702 ). As 02420X3 indicated, RPM at 70mph was around 1900 for us as well.

I was hoping others might contribute similar data for the 28i (and all engine types actually), but so far I haven't seen such. For what it is worth, I'm reattaching the 35i Summary chart here, but I am not sure how well it translates to the 28i variant.

Thanks Max Well, I appreciate your input. This is great data. I'm going to try shifting manually and see what happens. Also, I found the same year model at a used dealer. I might fake a test drive there and see what that one runs at. Thanks again.

[02420X3]

Note that in Sport mode your X3 will not use 8th gear. You can manually shift to it though.