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  #1  
Old 02-01-2020, 09:00 AM
cjac cjac is offline
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M340 18 or 19" wheels/tires ?

I'm seriously considering a M340i and I'm stuck on the wheel/tires selection.
Styling difference, 18" being less expensive, probably a softer ride, and probably slightly lighter, but 19 might have slightly better performance, which did you choose and why?
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  #2  
Old 02-01-2020, 01:59 PM
SteveinArizona SteveinArizona is online now
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Your decision may be made for you when you decide on trim level. If you choose MSport, I believe you automatically get the 19".

Personally, I think the difference in performance, unless you are going to track the car, is insignificant. but the difference in ride will be significant. I went MSport (gotta have the steering wheel) so I got the 19" tires but if I could have gotten the MSport with 18" tires, I probably would have done it.

But I do like the way my 530e handles.
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Old 02-01-2020, 08:08 PM
BruceOmega BruceOmega is offline
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I just ordered an M340i xDrive yesterday.

18" wheels are standard, 19" a $600.00 option. I went with 19" because I liked their appearance better than the standard 18" ones.

When I arrived at the dealer to place my order, there was an M340i sitting outside with the standard 18" wheels and a 330i on the showroom floor with 19" style 793 wheels. Seeing both in person reinforced my preference for the 19" wheels.

Initially I was going to go with style 791, but after seeing them in person I went with style 793.

I also got Adaptive M Suspension.

Bruce
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  #4  
Old 02-01-2020, 10:03 PM
Stelvio Stelvio is offline
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19" Absolutely

I'm coming from a 3-year lease of a 2017 M3; loved that car, except for a few things. Having had run-flats on leased BMWs since 2009, and knowing what endless hell they were on the diamond-cut concrete freeways of LA, I ordered the M3 with 18" wheels and non run-flat Michelins. That combo worked-out very well for the three years I enjoyed the M3. Now, I have an M340iX for three years, and once again the Adaptive M Suspension. This time however, I ordered the car in such a way that I was going to get the 19" wheels automatically (792M). Having read a fair amount on the car and then test-driving two different versions, I made sure the car was once again going to come with non run-flat Michelin Pilot Sport 4s tires - and the car is superb. In "comfort mode", the car is 1,000% better-riding (as in precise and stiffer by far), than the 2017 M3 was in "Comfort". I would call the 2017 M3 next to "floaty" on the road when in "Comfort", with the 18" wheels and tires; maybe that's why I spent most of the time in Sport+. With the M340iX though, "Comfort" with the 19" wheels and Michelin Pilot Sports is "perfect" (BMW has lost it's mind anyway; calling the base-ride "Comfort"? Should have just called it "Normal"). And in "Individual Sport", the car is even better still. After four months of driving the M340iX as mine is equipped, I wish the M3 was this good for 75% of the driving I do. All I really miss about the M3, is the dual clutch transmission, and that last 9% of grunt. And, my inside rearview mirror in the M340iX doesn't vibrate/buzz to the point where I had to hold it with my right hand to see who was a 1/4 mile behind me on the freeways. Go 19s, and get real tires.
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  #5  
Old 02-02-2020, 07:29 AM
cjac cjac is offline
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Good info, thanks...I had run flats on a 335i from around 2011 -2015 and hated them. I've read they're better now but think I'll still go with non run flats. And I agree the 19s look better than the 18s
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  #6  
Old 02-02-2020, 09:55 AM
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bear-avhistory bear-avhistory is offline
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Had/have 18" on two & 19" on another two. 135IS 18", 335is 19", 435 18" & AMS, 440 19" & AMS

19" with run flats & standard M-Sport suspension can be a hard ride. Get flats softens it up quite a bit & is a good plan.

18" with run flats & M-Sport suspension worked fine.

19" with run flats & Adaptive M Suspension in NC are fine. Roads are very good here would not run the combo in NJ. Get flats with 19" or 18" with run flats would work better there.

Would not buy a BMW without Adaptive M Suspension regardless of wheel size.

NOTE current run flats are much much better on the newer cars. On the 2011 335is took the run flats off in 1500 miles due to the harsh ride.
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  #7  
Old 02-03-2020, 06:52 AM
cjac cjac is offline
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Good info, thanks! BTW I miss those nice NC roads, grew up in Raleigh but now live in Philly suburbs, roads are garbage...





Quote:
Originally Posted by bear-avhistory View Post
Had/have 18" on two & 19" on another two. 135IS 18", 335is 19", 435 18" & AMS, 440 19" & AMS

19" with run flats & standard M-Sport suspension can be a hard ride. Get flats softens it up quite a bit & is a good plan.

18" with run flats & M-Sport suspension worked fine.

19" with run flats & Adaptive M Suspension in NC are fine. Roads are very good here would not run the combo in NJ. Get flats with 19" or 18" with run flats would work better there.

Would not buy a BMW without Adaptive M Suspension regardless of wheel size.

NOTE current run flats are much much better on the newer cars. On the 2011 335is took the run flats off in 1500 miles due to the harsh ride.
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Old 02-03-2020, 07:56 AM
Matera007 Matera007 is offline
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Quote:
Originally Posted by cjac View Post
I'm seriously considering a M340i and I'm stuck on the wheel/tires selection.
Styling difference, 18" being less expensive, probably a softer ride, and probably slightly lighter, but 19 might have slightly better performance, which did you choose and why?
Do non RF make less noise? Is there evidence of this? I've had RF for 10 years and never notice any loud tire noise. But I drive with music on anyway.
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  #9  
Old 02-03-2020, 01:45 PM
cjac cjac is offline
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My loud run flats were from 2010 - 2014, someone here and the dealer said they've improved quite a bit since then. I test drove one today with 19" run flats and it felt good
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  #10  
Old 02-03-2020, 02:31 PM
Matera007 Matera007 is offline
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What is loud? Like you cannot hear your music? That loud?

Well, I don't know what is A loud vs quiet tires. I drive with my windows closed and I do hear my tires. But its NOT loud to me. To others maybe it is.

If Open my roof or windows I hear tires but its normal to me.

Last edited by Matera007; 02-03-2020 at 02:32 PM.
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  #11  
Old 02-04-2020, 07:00 AM
cjac cjac is offline
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For curiosity sake, I looked on tirerack, discount tire, and STS for run flat all season (my last 2 cars I had separate winter wheels/tires but don't want to mess with that any longer), 19" and the availability was EXTREMELY limited.
has anyone looked for replacements in this combination?
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  #12  
Old 02-04-2020, 08:36 AM
BruceOmega BruceOmega is offline
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Before placing my order for an M340i, I looked on Tire Rack for 225/40-19 RFT All Season tires to see what was available. As you said, there are not many choices: two from Bridgestone, a Pirelli, and a Michelin. Based on a positive past experience, I would buy the Michelin Primacy MXM4 ZP when I have to buy replacements.
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  #13  
Old 02-09-2020, 08:19 PM
BlkBeauty BlkBeauty is offline
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I definitely wanted 19" tires on my 330i. I had settled for smaller wheels on previous vehicles and just was not gonna do it this time (looks-wise). But I was really concerned about the ride, especially since I'm old and have a bad back. I got the M-sport because it also gave me fog lights (ridiculous that it costs an extra $5K to get fog lights, but whatever). Anyway, I find the 19" ride fine, but then again, I live in Florida where there aren't many potholes. I keep it in Sport mode because I find it too slow/lurchy in Comfort. The sport seats are awesome, very comfortable.
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  #14  
Old 02-10-2020, 04:59 AM
cjac cjac is offline
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Thanks for the input guys, ordered the car Sat with the 19" all season run flats. I live in PA and can't go summer tires year round, last 2 cars I switched wheels/tires in the winter but am no longer interested in dealing with that
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  #15  
Old 02-11-2020, 07:03 PM
twssas twssas is offline
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While on the subject of wheels/tires, I am really interested in ordering a car in a few months, and am interested in the style 792m with non run flats. On the BMW website , "build your own", you have the option to select the 19" Non run flat performance tire, with style 792m, for $600. I am assuming you get the "standard" M Sport brake. Do you still get the Michelin PS4's? The website with this selection also gives you the option of selecting a spare for $150.

I did see an option to add additional oil cooler, radiator, and larger front brakes, for $1500,which includes the Michelin PS4's (I assume), but I am not planning on tracking the car, so really do not want the extra equipment. Plus you can not use the mini spare with this set up due to brake size, and you get a "mobility kit"

I have seen nothing but great reviews on this tire, and would really like to have it, but am unclear on what will be delivered with the option of picking just the style 792m option.
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  #16  
Old 02-11-2020, 09:09 PM
Stelvio Stelvio is offline
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Everybody's different, with what makes the most sense to them. For me, even though I have no intention of tracking my car either, it's HOT all over California over a year. There was no way I was going to order the car without the Extra Cooling Package for long, hot, and hard drives of 400+ miles in the summer. And, there is no way I would ever have anybody's run-flat tires again. Yes; unless they have changed things, the PS4s were going to be the "High Performance Non-Run-Flat" tires that came with the "Cooling & HP Tires" package. Regarding the "spare tire", I went for the "Mobility Kit" for the simple reason that at the very least, I need my trunk to have the same space as my 2017 M3; enough for 5 cases of various gear. When I saw how much trunk space is lost to the "spare tire", I laughed. It looked to me that you lose at least 30% of the height inside the trunk of this car by ordering that "spare". There was no way I was going to get Run-Flats, no way I wasn't going to have the PS4s, no way I was going to go without the extra oil cooler even though my SCCA Pro license is long expired, and no way I was going to lose any trunk space. The car is exactly as I wanted it, and how I think it should be - for me.
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