GLK-Class (X204) Produced 2008-2014

'12 GLK350 4Matic 20" rims - Tire Size

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Old Aug 12, 2019 | 11:39 PM
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'12 GLK350 4Matic 20" rims - Tire Size

Hi All,

Looking for some guidance around tires.

I have a '12 GLK350 4matic with an AMG package, thus 20" rims.

The recommended size is: 235/45 R20

However, there isn't much of a selection when it comes to that combination. Is it possible to go to a 245 width?

If so, what are the downsides?
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Old Aug 13, 2019 | 12:44 PM
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Among other downsides, it causes a medical condition where the user loses the ability to use the search function in internet forums.

Oh wait, you've already got this affliction.
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Old Aug 13, 2019 | 02:14 PM
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Originally Posted by CarbonKevinYWG
Among other downsides, it causes a medical condition where the user loses the ability to use the search function in internet forums.

Oh wait, you've already got this affliction.
Oh no, an insult from someone on the internet. How will I ever cope with my existence going forward, please do tell me how I cure this affliction I have?

Will your remedy find me more than the 5 references on the internet in relation to a GLK and going to 245? You'd be the internet God in my book, if it did. Are you up to the task?
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Old Aug 13, 2019 | 02:28 PM
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GLK 250

Notice the differences, particularly speedo being off as well as revs per mile (affecting odo long-term). There *may* be rubbing of the sidewalls at extreme left/right, not sure.
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Old Aug 13, 2019 | 04:52 PM
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It's all about rolling diameter if you want to keep the speedo accurate or at least not far off. I went staggered, so I'm definitely the exception, but it can be done. I'm running [img]file:///C:/Users/twatts/AppData/Local/Packages/Microsoft.Office.OneNote_8wekyb3d8bbwe/TempState/msohtmlclip/clip_image001.png[/img]255/40/20 on the front on 20x8.5 ET35 & 295/35/20 on 20x10.5 ET45 in the rear. Offset in the rear would have been a better fit if they were ET48/49. I did end up having to roll the rear fenders in the end, rubbed on occasion, now no rubbing at all. Fronts have lots of clearance, and if you went 255 square setup will have loads of room! I've also put coil overs on it and lowered it.

I used the Brabus guide/offerings to figure out that staggered was possible and what the largest size would be in the front/rear.

Cheers,

Tim

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Old Aug 13, 2019 | 07:18 PM
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Originally Posted by tawatts
It's all about rolling diameter if you want to keep the speedo accurate or at least not far off. I went staggered, so I'm definitely the exception, but it can be done. I'm running [img]file:///C:/Users/twatts/AppData/Local/Packages/Microsoft.Office.OneNote_8wekyb3d8bbwe/TempState/msohtmlclip/clip_image001.png[/img]255/40/20 on the front on 20x8.5 ET35 & 295/35/20 on 20x10.5 ET45 in the rear. Offset in the rear would have been a better fit if they were ET48/49. I did end up having to roll the rear fenders in the end, rubbed on occasion, now no rubbing at all. Fronts have lots of clearance, and if you went 255 square setup will have loads of room! I've also put coil overs on it and lowered it.

I used the Brabus guide/offerings to figure out that staggered was possible and what the largest size would be in the front/rear.

Cheers,

Tim

Thank you so much! I've been looking for pics, I feel like if that's how the 255 look, 245 should be not too far off from the look right now.
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Old Aug 13, 2019 | 07:19 PM
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Originally Posted by andreigbs

Notice the differences, particularly speedo being off as well as revs per mile (affecting odo long-term). There *may* be rubbing of the sidewalls at extreme left/right, not sure.
Thanks for the visuals, read a lot about the speedometer but didn't see a visual like that explaining it.
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Old Aug 15, 2019 | 03:23 AM
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I just installed Continental DWS06 245 45 20 with no issues on my 2011 GLK350 with 20" wheels.
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Old Aug 15, 2019 | 10:08 AM
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Originally Posted by kenchar
I just installed Continental DWS06 245 45 20 with no issues on my 2011 GLK350 with 20" wheels.
Thanks for the input, does it look any different? Any rubbing when you fully turn each way?
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Old May 7, 2022 | 10:25 AM
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GLK350
Originally Posted by StuartTheC55
Thanks for the input, does it look any different? Any rubbing when you fully turn each way?
I want to risk 245/50/20. What did you end up with?
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Old May 7, 2022 | 12:28 PM
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Originally Posted by MysticMan
I want to risk 245/50/20. What did you end up with?
front on mine is 255/40/20. No rubbing and I’m very low on coilovers.



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Old May 8, 2022 | 12:25 AM
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man that looks great. which coilovers did you go with?
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Old May 8, 2022 | 08:50 AM
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Originally Posted by roadtalontsi
man that looks great. which coilovers did you go with?
thanks!! I’m running the D2 Racing coilovers. They are one of the very few brands that make coilovers for the 4Matic, which mine is.






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Old Aug 13, 2022 | 08:52 PM
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2006 Alfa Romeo Brera, 2010 GLK350, 2018 BMW 640i GT, 1997 Subaru SVX, 2012 Moto Guzzi Norge GT8V
I just noticed you're parked beside the Cattle Castle at Lansdowne Park. What a beautiful restoration of a heritage building.
I ordered 255/45/20 Continental DWS 06 Plus today from Quattro Tire. I'm looking forward to a bit more rubber on the road and a little more sidewall to cushion the ride on our lovely Gatineau Hills highways.

Last edited by Silver Shadow; Aug 13, 2022 at 08:55 PM.
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Old Aug 14, 2022 | 12:44 AM
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2013 glk 350
Thick tire wide rim is better for saftey of rim
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Old Aug 14, 2022 | 12:47 AM
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Standard tire does not give much latitude
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Old Aug 14, 2022 | 08:52 AM
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Originally Posted by Silver Shadow
I just noticed you're parked beside the Cattle Castle at Lansdowne Park. What a beautiful restoration of a heritage building.
I ordered 255/45/20 Continental DWS 06 Plus today from Quattro Tire. I'm looking forward to a bit more rubber on the road and a little more sidewall to cushion the ride on our lovely Gatineau Hills highways.
yes! good eye!! The Ottawa/Ontario roads are no better. lol. Lots of potholes. Heading to Eurokracy this morning.
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Old Aug 15, 2022 | 11:39 AM
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2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
We have a regular ol' 2014 GLK350 (not 4Matic) and had no problem finding tires for the 20" rims.

For our GLK, we also need 235 /45 R20 .... I checked the Discount Tire (in USA) website.

OE is the PIRELLI SCORPION ZERO ASIMMETRICO for $290 each (USD) and tread-wear rating of 420.
Website recommended is MICHELIN CROSSCLIMATE2 for $264 each with tread-wear rating of 640

We ended up buying the (recently released) PIRELLI SCORPION VERDE ALL SEASON PLUS II for $209 each tread-wear rating of 740

Discount Tire lists 16 different tires to choose from.

Last edited by calder-cay; Aug 15, 2022 at 11:42 AM.
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Old Aug 15, 2022 | 11:22 PM
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GLK 350 / Porsche 993
never had issue finding OEM size either for usually about 1k a set straight from tirerack. Got Michelin LTX to see if they will last longer.
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Old Aug 22, 2022 | 08:12 PM
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I got my 255/45/20 tires mounted and they fit perfectly. Just enough clearance to the front struts. I love the ride quality of the Continental DWS 06 Plus.
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Old Oct 22, 2022 | 12:28 AM
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Almost finished with our second set of the Pirelli Scorpion Verde All Season. This is likely not the II series but the sets have been very good. Quiet & even treadwear on both sets.
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Old Oct 22, 2022 | 02:01 PM
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Originally Posted by Rascally Wabbit
Almost finished with our second set of the Pirelli Scorpion Verde All Season. This is likely not the II series but the sets have been very good. Quiet & even treadwear on both sets.

Quiet is good but even tread wear is indicative of properly aligned suspension geometry and appropriate air pressure - not good or bad tires.
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Old Oct 22, 2022 | 07:04 PM
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True, but more important are the ratings for the new Series II Pirelli. Looking at the numbers I see not only the improvement in the treadwear rating but also a big improvement in the wet ratings. The Yokohama tire which is fairly new is another possibility but what I see as to the ratings for Series II Pirelli makes me think that is the way I will go when the time arrives. Price makes me cringe however.
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