[colereinert]

hello, i was considering buying wheels for my F30 335i xdrive and i was wondering if i can do a 19x8.5 ET45 in the front and 19x9.5 ET45 in the back. and what's the biggest size tire i could go with in the back?

[cfm56d7b]

Are you planning to buy OEM or aftermarket wheels?

[alohasurftoad]

Originally Posted by colereinert

hello, i was considering buying wheels for my F30 335i xdrive and i was wondering if i can do a 19x8.5 ET45 in the front and 19x9.5 ET45 in the back. and what's the biggest size tire i could go with in the back?

19x8.5 ET45 front, offset is too high. ET32-38 is better for brake caliper, spring perch and fenderwell-liner-rub-while turning, clearance, depending on tire size.

19x9.5 ET45 is good for the rear

front and rear tire diameters should be close to equal as possible up to a difference of 1%, due to x-drive transfer case. difference above 1% should be avoided.

i suggest one of these size combinations that meet the x-drive parameters. either combination will fit the rim and your vehicle without issue if the front offset is within the range listed.
235/40/19(26.4"), 265/35/19(26.3")
245/40/19(26.7"), 275/35/19(26.6"), biggest for 9.5"

[colereinert]

Originally Posted by cfm56d7b

Are you planning to buy OEM or aftermarket wheels?

vmr aftermarket wheels

[Danielson]

Is there any one who know which tires i must buy for my new 19 inch OEM 437 M wheels, these wheels are from an M3/M4 with wider specs than my normaal 19 inch M style wheels.
437 M specs:
Front 9J ET 29
Rear 10J ET 40
My car is an F31 340i x drive and i didn’t want to have any trouble with my gearbox or transfercase.

[Techno 9000]

The tyres rolling circumference should be as close to being equal as possible.

Put both the OEM sizes and your tyre choices into a comparison website such as this to check them out...

https://tiresize.com/calculator/

[Danielson]

Okay guys, thanks for your reactions, my idea was also to put the tires with that measurements on the rims, my only fear is yet that the tires at the front and the rear aren’t wide enough and that the tires are “pulled” ( i do not know the exact word for it ) a bit, or am i wrong and is 235 front and 265 rear wide enough to have a normal fit and prevent this?
And is than the best choice to buy the Michelin pilot sport with the * marking?
And are there also wintertires with these measurements and the * marking?

Thanks again for your reactions…..

[Danielson]

Wiel ----- Front Offset + Band ---------- Achter Offset + Band ----------- Totale Hoogte Voor/Achter --- Pct Diff van OEM Voor/Achter
18" 400M (18x8 ET34 225/45R18 / 18x8.5 ET47 255/40R18) = 25.97" / 26.03" (voorraad)
19" 437M (19x8.5 ET35 225/40R19 / 19x9.5 ET40 255/35R19) = 26.08" / 26.02" REP (zelfde als voorraad)
19" 437M (19x8.5 ET35 235/40R19 / 19x9.5 ET40 265/35R19) = 26.40" / 26.30" REP (+1.6% / +1%)
19" 437M (19x9 .0 ET29 235/35R19 / 19x10 ET40 265/30R19) = 25,47" / 25,25" OEM (-2% / -3%) - Zeer populair bij ACS / HRSport-kits
19" 437M (19x9,0 ET29 235/40R19 / 19x10 ET40 265/35R19) = 26,40" / 26,30" OEM (+1,6% / +1%)
19" 437M (19x9,0 ET29 245/35R19 / 19x10 ET40 265/ 35R19) = 25,75" / 26,30" OEM (<-1% / +1%)
19" 437M (19x9,0 ET29 255/35R19 / 19x10 ET40 265/35R19) = 26,02" / 26,30" OEM (0% / +1 %)
19" 437M (19x9.0 ET29 255/35R19 / 19x10 ET40 275/35R19) = 26.02" / 26.57" OEM M3 *Mogelijke wrijving*

[Danielson]

I’ll find the list above in your linked forum, my car is lowered by ACS, i do not know how much, i simply never asked when i bought it.
235/40/19 (26.3") front, 265/35/19 (26.3") rear or
235/35/19 front, 265/30/19 rear are the best 2 options, it doesn’t matter which
one to choose now?
The tires will still be a little stretched i think.
The whole situation makes me just a little unsure what to do and that for over a long period of time now, i simply want to make the right decission, for now and for ever…
Thanks again for helping !!!

[Danielson]

I think 285 is to wide at the rear because sometimes i ride with
a ( touring )caravan behind the car and that’s a lot of weight extra..275 is in my opinion wide enough…so for the last time, which tyrespecs i need now????.
I have also another question.
Is it yet possible to get Android Auto on my idrive/carsystem, i think it’s running on bmw operating system 5.0 or 6.0 now and you probably need BMW operating system 7.0, is there an update possible or is there another way to solve this problem?
Thanks again and again and….