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Discussion Starter · #1 ·
So I have been searching through WEB to find info on the effect of the wheel size vs the range! So far without luck. I called the KIA dealership and asked about the effect from going from 20" to 21" and they did not know...

Have anyone seen this information anywhere official from Kia. I would love to upgrade to the 21" for summer use and keep the 20" for winter use. But if the loss is too big on the range I will stay on the 20"
 

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So I have been searching through WEB to find info on the effect of the wheel size vs the range! So far without luck. I called the KIA dealership and asked about the effect from going from 20" to 21" and they did not know...

Have anyone seen this information anywhere official from Kia. I would love to upgrade to the 21" for summer use and keep the 20" for winter use. But if the loss is too big on the range I will stay on the 20"
I read an article saying that the larger tyres have more rubber on the road thus more rolling resistance which then reduces range.
 

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Discussion Starter · #3 ·
I read an article saying that the larger tyres have more rubber on the road thus more rolling resistance which then reduces range.
yes, but it also depends on which tires it is and what width...going higher in size" does not mean wider tires normally, just lower profile...is it then "normal" sticky performance tires then they take away even more range...BMW has been very detailed about this when configuring a BMW i4 on their website. Going from 18" to 19" only takes away 10 km range, but going to 19" with performance tires (tires not designed for EV) then you loose 40 km and if you go for 20" with perfomance tires you loose 70 km range!!

I think Kia should disclose this information more clearly like BMW. An EV6 GT with 19" seems to go 510-520 km, and on 20" I have seen both 490 km or 470 km mentioned! The GT is rated for just 400 km and comes standard with 21" and has the same design as the GT LINE, so is the extra 70-90 km range loss related only to the 21"...?
 

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Discussion Starter · #4 ·
What I have found from the UK KIA site so far is the below: indicating that every inch" you increase costs about 20 km range. Now if that is correct also for the 21" then the range would be 460 km for the GT LINE with 21". However the EV6 GT has only 400 km range, so what takes away the remaining 60 km? Weight? or is the EV6 GT running on some sticky performance tires perhaps. That would explain the extra 60 km loss of range...?

EV6 RW
19" 520 km range
20" 500 km range

EV6 4x4W
19" 500 km range
20" 480 km range

EV6 GT
21" 400 km range
 

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What I have found from the UK KIA site so far is the below: indicating that every inch" you increase costs about 20 km range. Now if that is correct also for the 21" then the range would be 460 km for the GT LINE with 21". However the EV6 GT has only 400 km range, so what takes away the remaining 60 km? Weight? or is the EV6 GT running on some sticky performance tires perhaps. That would explain the extra 60 km loss of range...?

EV6 RW
19" 520 km range
20" 500 km range

EV6 4x4W
19" 500 km range
20" 480 km range

EV6 GT
21" 400 km range
The GT has more powerful motors. That must have some impact on efficiency.
 

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This article focuses on bigger wheels...as in bigger diameter than standard...not the same thing

Anyway we need info from Kia from their wlpt tests in order to have the facts.
This article focuses on bigger wheels...as in bigger diameter than standard...not the same thing

Anyway we need info from Kia from their wlpt tests in order to have the facts.
Really? I think you have no idea what you are talking about.
 

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Yes, bigger RIM, more metal, more weight. The higher the weight of your rims, the more power is required to spin it on acceleration. Rotational force. It works with merry-go-rounds, too. No friend on the wheel, easier to spin around!

Buy some aftermarket rims that are light weight and you will get your range back.

the GT definitely is losing most of the extra range in the 200 HP bump!!!
 

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Discussion Starter · #11 ·
Really? I think you have no idea what you are talking about.

From the article:
"For instance, the car wheels upgrading from 16 inches to 19-inches will give an error in speedometer reading"

This would only happen if you change the diameter; hence bigger wheels

going from 18" to 20" requires lower profile tires in order to maintain the same diameter.

Anyway as I started by asking; I am looking for official info from KIA about the real effect from the wlpt test with the various wheels like BMW offers for all their wheels on their website 👍
 

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Discussion Starter · #12 ·
Yes, bigger RIM, more metal, more weight. The higher the weight of your rims, the more power is required to spin it on acceleration. Rotational force. It works with merry-go-rounds, too. No friend on the wheel, easier to spin around!

Buy some aftermarket rims that are light weight and you will get your range back.

the GT definitely is losing most of the extra range in the 200 HP bump!!!
Yes, true...heavier wheels = more power required and yet other factors play a part.

Teslabjørn just tested the Tesla Y in a 120 km/h long range test on uoriginal 18" wheels vs the standard 19" and the 19" gave longer range.
So wheel design also playes a part. That is why I am looking for actual details from KIA on the 21" orginal wheels fitted on the Ev6 GT LINE 👍
 

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The model of tires also plays a role in the range as well, it is a combo of both for traction and efficiency, plus whatever brand the manufacturer is working with and provide on the vehicle. I changed out the Kumho that came on the Optima Hybrid for some Pirelli's and there was an improvement in range, grip and noise level with just that one change. Also the handling was massively improved over the OEM tires.
 

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More rubber on the road = more rolling resistance = the need for more energy to move the tyre.
This can be part of it if it's a wider tire. But, even when they are the same width which would equal a very similar contact patch, having a larger rim and less sidewall will still reduce efficiency. At this point, it's mainly unsprung weight of the extra metal from the larger rim that takes more centrifugal force to get spinning when you accelerate.
 

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Discussion Starter · #17 ·
I found this information from the tests done in KOREA...
So the GT LINE 4WD with 20" I have ordered has a tested range of 351 km on the motorway (I guess at 110 km/h)
Comparing that to Ionic 5 and the other EV I am considering below:

Ioiniq 5 has 335 km highway range (real world tests show very poor perfomance on the motorway)

If I do not buy the EV6 these 3 cars could be my choice:
Tesla Y has 385 km highway range (real world tests show very good perfomance on the motorway even at 130 km/h)
BMW i4 edrive has 450 km highway range (real world tests yet to be done on the motorway)
Mercedes EQE has 500 km highway range (real world tests yet to be done on the motorway)

Font Parallel Rectangle Number Pattern
 

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I found this information from the tests done in KOREA...
So the GT LINE 4WD with 20" I have ordered has a tested range of 351 km on the motorway (I guess at 110 km/h)
Comparing that to Ionic 5 and the other EV I am considering below:

Ioiniq 5 has 335 km highway range (real world tests show very poor perfomance on the motorway)

If I do not buy the EV6 these 3 cars could be my choice:
Tesla Y has 385 km highway range (real world tests show very good perfomance on the motorway even at 130 km/h)
BMW i4 edrive has 450 km highway range (real world tests yet to be done on the motorway)
Mercedes EQE has 500 km highway range (real world tests yet to be done on the motorway)

View attachment 439
Putting your figures aside.....I'm surprised that you have ordered a GT Line with 20" wheels. Only yesterday - in the UK - I was told (and shown the specification) that the GT Line comes with 19" wheels and cannot be changed. The GT Line S comes with 20" wheels. Apparently - in the UK - nothing can be changed or any options added.
 

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Discussion Starter · #19 ·
Putting your figures aside.....I'm surprised that you have ordered a GT Line with 20" wheels. Only yesterday - in the UK - I was told (and shown the specification) that the GT Line comes with 19" wheels and cannot be changed. The GT Line S comes with 20" wheels. Apparently - in the UK - nothing can be changed or any options added.
In Denmark we have no choice between GT LINE and GT LINE S or rather it is just called GT LINE and it what you call GT LINE S...
Only option I could do was panoramic roof and augmented reality...which I did.

I wanted the GT LINE without the silly MERIDIAN subwoofer in the back which steals all the underfloor storage, so I hope to be able to unplug and remove that thing, since I can not order it without it...
 

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From my chevy Bolt experience, you can lose 10% plus range going from green low resistant tires to stickier tires.
 
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