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Discussion Starter · #1 ·
Hi,

I will got my EQC next month so I have time to plan winter-wheels for the car.

In Finland we have in wintertime snow, slush, wind, etc. which "eat" battery/range. So maybe it´s reasonable if you don´t eat range also with wheel-selection.

19 or 20 inches? I don´t know. Bigger looks better, but is it better if I drive highway?

I didn´t found any information from original-Mercedes-wheels which are optimal choice or anything.. only different models and prices. Someone have better information?
 

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Congratulations on the new EQC @JarmoRunne! Welcome to the forum! I'm not the biggest fan of low profile tires so I tend to go with a smaller rim to get a bigger tire for better ride quality.

If you're looking for wheel/tire sizes here are the sizes. How are you liking the EQC so far?


Tire​
Rim​
235/55ZR19 101Y7.5Jx19 ET32
235/55R19 105W8Jx19 ET34
235/50R20 100W7.5Jx20 ET32
235/45ZR21 101Y8Jx21 ET27
 

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Discussion Starter · #3 ·
Hi,

Thanks, but I will got my EQC next month so I don´t have experience yet. :unsure::D

I like also "smaller rims, bigger tire"-strategy, but car will come with 21"-wheels and those I will keep summertime.


Thanks from tire-size-guide, but still I don´t know what´s optimal choice if I want forexample more range..? If we compare Mercedes Original wheels so is there some more aerodynamic-wheel..?
 

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I have not seen any wheel winter tyre package for the eqc either. I was wondering whether I might just buy the tyres and swap them onto the wheels already fitted. I have always avoided this option and would be interested in anyone’s views re the effect on the tyres from being removed and refitted ie does it cause stresses that may damage or weaken the tyre?
 

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Discussion Starter · #5 ·
I was wondering whether I might just buy the tyres and swap them onto the wheels already fitted. I have always avoided this option and would be interested in anyone’s views re the effect on the tyres from being removed and refitted ie does it cause stresses that may damage or weaken the tyre?

I think it´s more normal in Finland owns two sets of wheels&tyres, but some countries like Estonia, it´s normal swap summer and winter tires to one set of wheels.

Next winter Finnish company Nokian Tyres intends to launch winter-tires for electric-cars, Hakkapeliitta 10EV. Around Europe people can´t use those, because those tires are with studded.
 

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I think it´s more normal in Finland owns two sets of wheels&tyres, but some countries like Estonia, it´s normal swap summer and winter tires to one set of wheels.

Next winter Finnish company Nokian Tyres intends to launch winter-tires for electric-cars, Hakkapeliitta 10EV. Around Europe people can´t use those, because those tires are with studded.
Thanks for the reply. I know in Austria most people have a set of wheels and winter tyres which is what I have done but I am finding it hard to sell the spares when I change the car, I have a spare set for a c class and an e class now! Given Mercedes were not listing a winter wheel package I was thinking of just getting the tyres for the EQC as I shall probably only be keeping it for a max of 2 seasons anyway. Apart from the risk of damage to the wheels on changeover it seems it might be a good idea.
 

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I found one video from Mercedes-Benz where they tell that combination of 19"-amg-wheels and aluminium-look running boards lower cd-value from 0.28 -> 0.27 and gives little bit more range. Very little, but still.
A question for you Jarmo and/or others - What do you think about the 21-inch wheels in EQC on summer time - would you still choose those over the others compared to 19/20 inch? Our roads in Finland suffer from winter and those are not so smooth all the time. From my opinion those 20-inch AMG wheels were little bit better (more sensitive naturally) to drive and the road noise level was slightly lower, but I'm not so sure about the feeling nor the noise level. 21-inch wheels look better.

I did test both 20- and 21-inch standard AMG line tiers with EQC. I've also tried to find exact noise level figures about the tiers, but I haven't been able to find anything. 21-inch tiers were excellent and the noise level with those tiers was also very low (cabin noise). For the record, I did choose 20-inch tiers for the snow tiers without studs. Is the difference between 20-inch and 21-inch tiers significant - has anyone got experience?
 

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Discussion Starter · #9 ·
A question for you Jarmo and/or others - What do you think about the 21-inch wheels in EQC on summer time - would you still choose those over the others compared to 19/20 inch? Our roads in Finland suffer from winter and those are not so smooth all the time. From my opinion those 20-inch AMG wheels were little bit better (more sensitive naturally) to drive and the road noise level was slightly lower, but I'm not so sure about the feeling nor the noise level. 21-inch wheels look better.
Haven't try 20-inch/19-inch wheels, so can't say anything. I have only driven with 21-inch AMG wheels.

I asked from few Mercedes-salesman in Finland about difference between wheel-sizes or wheels plus aluminium-look running boards and they didn't know anything. Only "depends from driver" -kind of shit.
 

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Haven't try 20-inch/19-inch wheels, so can't say anything. I have only driven with 21-inch AMG wheels.

I asked from few Mercedes-salesman in Finland about difference between wheel-sizes or wheels plus aluminium-look running boards and they didn't know anything. Only "depends from driver" -kind of shit.
Nice! :D Same experience, depends on the driver. That's why I tried myself and thought that 20-inch is the way to go, but I'm still uncertain due to the fact that 21-inch look nicer. Apparently you're happy with those 21-inch wheels and there's no noticeable range reduction either, or anything?

It would be nice, if Merc could share clear data about the different tire sets, such as noise level and potential impact on the range... I guess they have it anyways and that information is somewhere (like this: EPREL Public website). It's a little bit different story to choose tires for a dead silent electric car than to a 3.0 liter V6 biturbo AMG 63 type of car, which is supposed to make some sound. Some car manufacturer did have those specs from the tires, was it BMW...
 

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Discussion Starter · #11 ·
Nice! :D Same experience, depends on the driver. That's why I tried myself and thought that 20-inch is the way to go, but I'm still uncertain due to the fact that 21-inch look nicer. Apparently you're happy with those 21-inch wheels and there's no noticeable range reduction either, or anything?

It would be nice, if Merc could share clear data about the different tire sets, such as noise level and potential impact on the range...
21-inch looks good, but hard to say how much those "eats" range compared 19 or 20.

Mercedes can offer WLTP-numbers for basic-EQC so of course they can offer numbers for EQC with another options. If they don't have those numbers, it's okay for me, but "depens from driver..."
 

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21-inch looks good, but hard to say how much those "eats" range compared 19 or 20.

Mercedes can offer WLTP-numbers for basic-EQC so of course they can offer numbers for EQC with another options. If they don't have those numbers, it's okay for me, but "depens from driver..."
While inspecting this little bit more I found out this Motortrend article: 2020 Mercedes-Benz EQC 400 Review: The Three-Pointed Star Goes Electric

"The base wheel is a 19-inch alloy, but the cars we drove in Norway were fitted with either 20-inch wheels and Pirelli Scorpion Verde tires (235/50 front and 255/45 rear) or 21-inch wheels and Michelin Pilot Sport 4 SUV tires (235/45 front and 255/40 rear). As expected, the Michelins gave better grip but at the expense of more tire noise and patter over road acne."

They experienced more tire noise like I somehow, but I looked at details about the both tires (EU labeled details from Finnish autodoc.fi site) and based on that, 21-inch wheels make same amount of road noise, with better grip and fuel efficiency - which is rather weird. Guess I have rethink and choose those bigger wheels then, because the difference is rather small - I hope ;)
 

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While inspecting this little bit more I found out this Motortrend article: 2020 Mercedes-Benz EQC 400 Review: The Three-Pointed Star Goes Electric

"The base wheel is a 19-inch alloy, but the cars we drove in Norway were fitted with either 20-inch wheels and Pirelli Scorpion Verde tires (235/50 front and 255/45 rear) or 21-inch wheels and Michelin Pilot Sport 4 SUV tires (235/45 front and 255/40 rear). As expected, the Michelins gave better grip but at the expense of more tire noise and patter over road acne."

They experienced more tire noise like I somehow, but I looked at details about the both tires (EU labeled details from Finnish autodoc.fi site) and based on that, 21-inch wheels make same amount of road noise, with better grip and fuel efficiency - which is rather weird. Guess I have rethink and choose those bigger wheels then, because the difference is rather small - I hope ;)
A forged wheel, whether from Mercedes or custom built, would save weight and is stronger compared to factory. We offer custom OEM forged wheels and our signature line of Players Club Forged wheels for the EQS in 19-inch to 21-inch: Wheels
 

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Congratulations on the new EQC @JarmoRunne! Welcome to the forum! I'm not the biggest fan of low profile tires so I tend to go with a smaller rim to get a bigger tire for better ride quality.

If you're looking for wheel/tire sizes here are the sizes. How are you liking the EQC so far?


Tire​
Rim​
235/55ZR19 101Y7.5Jx19 ET32
235/55R19 105W8Jx19 ET34
235/50R20 100W7.5Jx20 ET32
235/45ZR21 101Y8Jx21 ET27
Please note that 2x 7,5Jx19 ET32 with 235/55 R19 101V tires are used on the FRONT axle, and 2x 8Jx19ET34 with 255/50 R19 103V tires are used on BACK axle. Excerpt from specs below:

Scope of delivery (19" for AMG line):

Mercedes-Benz AMG rim set

  • 2x partnumber A2934010700 7Y51
  • 2x partnumber A2934011400 7Y51
Details
  • genuine Mercedes-Benz rims
  • model: 5-double-spoke-wheel
  • size:
    • front axle 7,5x19 ET32 (offset)
    • rear axle 8x19 ET34 (offset)
  • colour: tantal grey / glossy front
  • Tire size:
    • front tires: 235/55 R19 101V
    • rear tires: 255/50 R19 103V
  • suitable for summer and winter.
So, EQC FRONT and BACK wheels (rims and tires) are NOT equal in the "original" sets!

And I see the same in specs for bigger 20" (and for 21" also different):

Highlights:

  • genuine Mercedes-AMG rims
  • multi-spoke-wheel
  • colour: black shiny / glossy front
Product description:

Genuine Mercedes-Benz AMG rim set in 20 inch for your EQC SUV N293

Before your wheels are allowed to accompany you safely on your travels, they are subjected to an extensive development and test programme. Each wheel design has to pass a variety of endurance tests, based on exacting Mercedes-Benz guidelines, all of which exceed statutory requirements. These include special test routines which simulate real challenges on the road and material tests in cutting-edge x-ray facilities.

Details
  • genuine Mercedes-Benz rims
  • model: multi-spoke-wheel
  • size:
    • front axle 7,5x20 ET32 (offset)
    • rear axle 8,5x20 ET30 (offset)
  • colour: black shiny / glossy front
  • recommended tire size:
    • front tires: 235/50 R20 100W
    • rear tires: 255/45 R20 101W
  • suitable for summer and winter

High-sheen, black matte or polished wheels undergo additional tests such as exposure to highly corrosive salt spray or a 28-day variable climate programme. Only once all of the tests have been passed may the wheels be included in the range of genuine Mercedes-Benz wheels.

Scope of delivery:
  • Mercedes-Benz AMG rim set
    • 2x partnumber A2934010800 7X23
    • 2x partnumber A2934010900 7X23
light-alloy wheels are supplied without tyres, hub caps, pressure sensor, valve caps, wheel bolts or rim locks

Suitable for: Mercedes-Benz EQC SUV N293 (06/2019- )
I personally do prefer as small rim as possible. The rule seems to be simple: the bigger the rim the better it looks for most people, but the smaller diameter, the more rubber with all the positives that this brings - ride is more soft and less of bumps power reaches the car suspension system to wear it out, as more shock energy is absorbed by pressurized air in the tire and by its rubber. Also, lot of rubber and higher height of metal brings great comfort by no need to over-care when you park near the pavement side, you can just allow the rubber to touch the border without damaging the rim. With oversized rims, if you will touch pavement border with metal part, you will damage the rim. Typically, you need to buy then a tire with special border for better rim protection, or you need to drive perfectly precise, if you can always park with less that 5mm distance from pavements without touching them, in cities where streets are narrow. Also if you try to drive up your car on the pavement border and do that not enough perpendicular to the border, you will cut the tire rubber with rim against the border working like scissors, and you will also damage the rim. That will not happen with bigger tire, you can drive the SUV as a tractor and enjoy that the rim/tires are still good with whatever angle you will drive up the pavements. Regarding the looks, "it depends on the driver" :) and while luxury sedans look better with huge rims and low height tires, the big SUVs / Jeeps and other tractors :) look much more impressive off-roaders to me when they are with small rims and huge tires.
 
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