Tires spec’d for GLC63 on GLC43?

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Jul 16, 2021 | 08:59 AM
  #1  
My searches for All Season tires for my GLC43 Coupe come up empty. OTOH, there are many All Seasons available for GLC63. Given my 43 has staggered 21” wheels 8.5” / 9.5” rims, is there any reason NOT to consider tires spec’d for 63?
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Jul 16, 2021 | 06:01 PM
  #2  
Quote: My searches for All Season tires for my GLC43 Coupe come up empty. OTOH, there are many All Seasons available for GLC63. Given my 43 has staggered 21” wheels 8.5” / 9.5” rims, is there any reason NOT to consider tires spec’d for 63?
All that matters is the size and if it will fit without rubbing.

Consider ALL tires that fit the car and your budget.
Reply 1
Jul 16, 2021 | 08:31 PM
  #3  
I guess what I’m really asking is if others have used GLC63 spec’d 265/40 & 295/35 x 21 tires vs GLC43’s 255/40 & 285/35 x 21 w/o adverse effect, rubbing etc, on GLC43 with 8.5/9.5 x 21” rims.


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Jul 17, 2021 | 06:56 AM
  #4  
Quote: I guess what I’m really asking is if others have used GLC63 spec’d 265/40 & 295/35 x 21 tires vs GLC43’s 255/40 & 285/35 x 21 w/o adverse effect, rubbing etc, on GLC43 with 8.5/9.5 x 21” rims.
I think this thread has your anwers:

https://mbworld.org/forums/glc63s-gl...?highlight=295
Reply 0
Jul 17, 2021 | 09:23 PM
  #5  
I think the question was the tires rather than wheels? I'm about to pull the trigger on 265/40-21 and 295/35-21 for my GLC43 wheel setup since I can't find all-season tires in the standard stock configuration. I thought there had been some threads in here that this works quite well?
Reply 0
Jul 17, 2021 | 09:30 PM
  #6  
Quote: I think the question was the tires rather than wheels? I'm about to pull the trigger on 265/40-21 and 295/35-21 for my GLC43 wheel setup since I can't find all-season tires in the standard stock configuration. I thought there had been some threads in here that this works quite well?
Yes - but if the wheels will fit, the tires will fit.
Reply 1
Jul 18, 2021 | 09:57 AM
  #7  
Quote: Yes - but if the wheels will fit, the tires will fit.
Not necessarily - the GLC63 appear to have wider wheels? So as a package they may fit but installing the wider tire from the GLC63 to the narrower wheel from the GLC43 may not work? Or what's your logic..
Reply 0
Jul 18, 2021 | 10:46 AM
  #8  
Quote: Not necessarily - the GLC63 appear to have wider wheels? So as a package they may fit but installing the wider tire from the GLC63 to the narrower wheel from the GLC43 may not work? Or what's your logic..
OK, I'll get back to specific information, rather than the "Here is a book on fishing - go teach yourself to fish" response from earlier.

OP: Are these your OEM tire sizes?

255/40ZR21 102Y. 8.5Jx21 ET40
285/35ZR21 105Y 9.5Jx21 ET22

If that is the case, then you are limited by your RIM size.
Let's confirm that first. Standing by...

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Jul 18, 2021 | 02:40 PM
  #9  
@larrysing I have the same vehicle as the OP and yes those are the tire sizes. And yes I think the max tire size for a 8.5" width rim is 255 so the original setup on the GLC43 appears to be already at the max. But when searching around there are tons of setups for 8.5 wheels where the owners increased the tire size to 265 with no issues?
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Jul 19, 2021 | 02:11 PM
  #10  
Quote: @larrysing I have the same vehicle as the OP and yes those are the tire sizes. And yes I think the max tire size for a 8.5" width rim is 255 so the original setup on the GLC43 appears to be already at the max. But when searching around there are tons of setups for 8.5 wheels where the owners increased the tire size to 265 with no issues?
Yes, you can find many instances of people going "oversize" in relation to tire to wheel ratios.

How that affects the drivability and longevity of the tire, and how the cars react to it, is more of a case-by-case situation.
Reply 0
Jul 26, 2021 | 10:12 AM
  #11  
All-season tires found 265 and 295
Like may of you, I was looking for AS tires for my GLC43 with 21" rims. The summer Conti's didn't do it - hydroplaning, crabbing and I was concerned about their utility in winter.

I found that 265/40/21 and 295/35/21 works with no rubbing. I purchased Continental EXTREME CONTACT DWS06 PLUS and am thrilled. 50k warranty, good ratings in snow, no crabbing, no rubbing, MUCH quieter and MUCH MUCH smoother ride. I admit that I don't track, I'm a fairly conservative driver and that I don't push the 43 the way many of you do but if you're looking for an A/S tire, I give these, and the size (up) a positive rating.
Reply 2
Jul 26, 2021 | 04:18 PM
  #12  
Thanks just ordered the Pirelli Scorpion Zeros in the same size, looking forward to it.
Reply 0
Dec 19, 2022 | 08:58 AM
  #13  
Quote: Like may of you, I was looking for AS tires for my GLC43 with 21" rims. The summer Conti's didn't do it - hydroplaning, crabbing and I was concerned about their utility in winter.

I found that 265/40/21 and 295/35/21 works with no rubbing. I purchased Continental EXTREME CONTACT DWS06 PLUS and am thrilled. 50k warranty, good ratings in snow, no crabbing, no rubbing, MUCH quieter and MUCH MUCH smoother ride. I admit that I don't track, I'm a fairly conservative driver and that I don't push the 43 the way many of you do but if you're looking for an A/S tire, I give these, and the size (up) a positive rating.
Do you have any pictures of your GLC with this setup? I was thinking about getting these exact tires but wanted to see how far the larger tires stick out! Thanks!
Reply 0
Dec 19, 2022 | 01:28 PM
  #14  
I have GLC 63s forfged 21s on my GLC43 and GLC63 sized all-season Pirellis installed with no issues.

The REAL issue is the OEM wheel size of the GLC43 I believe may be too thin to run the GLC63 tires
Reply 0
Apr 19, 2025 | 06:45 PM
  #15  
DWS06+
Quote: Like may of you, I was looking for AS tires for my GLC43 with 21" rims. The summer Conti's didn't do it - hydroplaning, crabbing and I was concerned about their utility in winter.

I found that 265/40/21 and 295/35/21 works with no rubbing. I purchased Continental EXTREME CONTACT DWS06 PLUS and am thrilled. 50k warranty, good ratings in snow, no crabbing, no rubbing, MUCH quieter and MUCH MUCH smoother ride. I admit that I don't track, I'm a fairly conservative driver and that I don't push the 43 the way many of you do but if you're looking for an A/S tire, I give these, and the size (up) a positive rating.
Dear whartonsprinter,

Thanks for the feedback regarding the DWS06+
tires. Could you please let me know if you ever had any crabbing issues with them during colder weather? I know this thread is a few years old, so I am hoping that you had the tires for several years and that would give you good feedback. I currently have the Continental UHP summer tires on my GLC 43, and they are crabbing like crazy even in 70°F weather. Thanks much.
Reply 0
Apr 28, 2025 | 11:00 PM
  #16  
Quote: My searches for All Season tires for my GLC43 Coupe come up empty. OTOH, there are many All Seasons available for GLC63. Given my 43 has staggered 21” wheels 8.5” / 9.5” rims, is there any reason NOT to consider tires spec’d for 63?
I ran the GLC 63 tires both winter and summer when I had a GLC 43 it works
Reply 0
May 25, 2025 | 07:08 PM
  #17  
Any chance someone has pics of this tire size installed on a GLC43? Need a new set of tires next month and considering going up to the 63 tire sizing on my factory 21”s.

thank you!
Reply 0
Nov 16, 2025 | 01:32 PM
  #18  
Better late than never. My OEM Continental ContiSportContact 5 UHP summer tires (255/40/21 & 285/35/21) needed to be replaced on my 2020 GLC 43 Coupe. I had replaced them with 265/40/21 & 295/35/21 Continantal DWS06 Plus all season tires. The crabbing issue has been completely resolved. The tires fit great, have great grip, and are quiet. No rubbing at all. Speedometer is 100% accurate now.
Reply 3
Apr 29, 2026 | 11:08 PM
  #19  
Why has none of the guys that put on the bigger tires from the 63 not posted a photo? Y'all got asked like 3 times man 🫩
Reply 0
Apr 30, 2026 | 02:43 AM
  #20  
Photos


Photos attached.
Photos attached.
Reply 1
Apr 30, 2026 | 05:32 PM
  #21  
Beautiful, thank you.
I just ordered a set with c63 sizes. Went with falken azenis fk460 a/s

Quote:

Photos attached.
Photos attached.
Reply 0
Apr 30, 2026 | 07:40 PM
  #22  
You’re Very Welcome
Nice! You’ll be happy with the 265 front and 295 rear sizes. I’ve experienced no rubbing on mine even in the lowered Sport+mode.
Reply 0
Apr 30, 2026 | 10:33 PM
  #23  
I just yesterday, replaced the Goodyear RunOnFlats with a set of Michelin cross climate 2. I run a staggered 20 inch rims on my GLC43AMG and the difference in handling is night and day when compared to the RunOnFlats...
Reply 0
May 13, 2026 | 08:15 PM
  #24  
Ordered, installed, and aligned my new tires. I went with the Falken Azenis FK460 with the glc63 size, and so far for the past two weeks driving has been really good. The slightly wider tire grips well on turns and honestly wheels still look good. These are the 21" glc 43 wheels. 265/40R21 and 295/35R21





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