840d aftermarket wheel and tyre options - suggestions

[Honeywell]

Hi,

I've just bought a 2018 840d coupe on 20 inch wheels.

I'd like a second set of alloys fitted with all season tyres preferably with a little more sidewall. I've been a fan of Michelin CrossClimate 2's in the past but any premium all season would do. I often commute to and from work in the small hours on rural roads and in winter there's frequently times when I'm the first guy down the road or the guy coming home before the grittier has reached that area. All seasons have probably saved me or got me home a couple of times on my F10 535d over the past decade,

I'm somewhat baffled by wheel sizes and offsets (ET) that will fit the car, clear the brakes (blue M Sport calipers) and give me all season tyre options. The wheels are annoyingly staggered being wider at the rear.

Has anyone on the forum solved this conundrum and/or can anyone recommend an expert supplier who can give solid advice? I don't want to spend a grand on alloys and the same on tyres then find they don't work. I'm concerned how much a small (say 5mm) difference in ET from OEM will impact the geometry or the four wheel drive system.

I intend to keep the car for 8 years/170,000 miles so I'm happy to make a large investment up front. Any pointers, past experiences or factors I may have overlooked would be greatly appreciated.

[Honeywell]

.

[rassi]

If you want to look for OEM wheels, these are the options:

18" 642 Square set-up with 245/45R18
19" 727M Staggered with 245/40R19 and 275/35 R19
19" 786 , Square with 245/40R19

[Honeywell]

Thank you for that.

I would normally go OEM as its makes the insurance quotes less of a hassle but I admit I am feeling my inner teenager screaming at me to get a set of bronze aftermarket... The ET offset is 4mm out from standard though on the fronts. Would that actually matter?

[Honeywell]

Those non OEM wheels above are £800. The BMW wheels appear to be around £3,000 officially!

[d_a_n1979]

Honeywell said:

Thank you for that.

I would normally go OEM as its makes the insurance quotes less of a hassle but I admit I am feeling my inner teenager screaming at me to get a set of bronze aftermarket... The ET offset is 4mm out from standard though on the fronts. Would that actually matter?

They'll fit fine, a change of 4 in the offset is nothing - just need to ensure they clear your brakes as not all inner barrels are the same

And re tyres - I'm massively impressed with the Goodyear Vector Gen3 all seasons I've got fitted to my F31 and running them as 'winters' (I run the Goodyear Assym6s as summer tyres)

We've had snow today and the BMW will be used by the wife to take me to hospital tomorrow; but in the wet & cold, they've been faultless and grip really well.



I run a size wider than OEM (so 235 rather than 225) as that gives me a straighter sidewall then and better rim protection/better contact patch etc

[Honeywell]

Thanks for that.

I am a big fan of all seasons which I find handle the muddy rural roads better than the performance summer tyres I used to always buy. I NEVER got near the performance limit of a modern premium summer tyre in the dry and realised I was paying for performance that I could only ever use on a track but the performance I actually needed was on a cold wet muddy country road at 2 am.

Plus I just like sidewalls since they stopped maintaining the roads in the UK...

[d_a_n1979]

Honeywell said:

Thanks for that.

I am a big fan of all seasons which I find handle the muddy rural roads better than the performance summer tyres I used to always buy. I NEVER got near the performance limit of a modern premium summer tyre in the dry and realised I was paying for performance that I could only ever use on a track but the performance I actually needed was on a cold wet muddy country road at 2 am.

Plus I just like sidewalls since they stopped maintaining the roads in the UK...

Fully agree with that; the likes of the Michelins and Goodyears have come on a lot recently too re their levels of grip and cornering abilities etc..

We live semi rural; the roads we use are generally the farmers local (so covered in ste day in, day out) and unloved/untreated etc - that's why I like sidewalls!

Dropped from 20s to 19s for summers/18s for winters on my previous F01 7'er and on 18s all year round for my F31 as it has the larger Brembo brakes etc

[Honeywell]

Now I am in a world of TPMS pain as it seems these cars have Direct TPMS which will require a set of sensors coded to the car. This is harder work than it used to be!

[mmm-five]

Honeywell said:

Now I am in a world of TPMS pain as it seems these cars have Direct TPMS which will require a set of sensors coded to the car. This is harder work than it used to be!

I didn't need to do any 'coding' on my 2015 F31, I just fitted a new set of the correct frequency and reset the TPMS warning on iDrive.

Although I did go through a couple of set of sensors as there are different lengths (even within BMW OE wheels).

[d_a_n1979]

Honeywell said:

Now I am in a world of TPMS pain as it seems these cars have Direct TPMS which will require a set of sensors coded to the car. This is harder work than it used to be!

As mmm-five said; they don't need coding - just ensure you get the correct TPMS for your car and they'll work/start to register as soon as they're fitted and you start to use the car with those wheels fitted

[Honeywell]

Ahhh, thank you. That was not an obvious conclusioon from reading the forums.

Cheers.