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This question pertains to a '21 GLS63 I have on order and maybe some others will find beneficial? (Delivery date will leave me with 3 months of not-summer tire weather)
Ordered with 22" multispoke, Factory Front rim size: 22" x 10 Factory Rear rim size 22" x 11.5"
If we stick on some 20" x 8.5" rims, square with winter rubber, we are -4% tire diameter. Anyone know if dealer can calibrate speedometer to new # of revolutions per mile so we're not putting on 4% more miles on our odometers than we're actually putting on?!? : ) haha- don't get chippy with me, we've ALL argued about lower percentages than 4 with our sales consultants! hahaha Anyway, serious inquiry though, if the X167 GLS 63 will take a square 20" x 8.5" as I was just assuming and do not like to do such a dangerous thing.
Cheers,
Bill
Last edited by wjadams452ba; 10-01-2020 at 04:39 PM.
As for the tire dimensions you suggested for the 20” wheels, you should be trying to match the tire circumference/diameter/radius of your OEM wheels as much as possible so 275/50 tires would be fine on 21” wheels but would be to thin for 20” wheels. You may want to consider getting a tire with a larger side wall if you are dropping down to 20” wheels. There are a bunch of web sites where you can enter the tire dimensions of the original tires and the replacement tires to see how similar their circumferences are.
Thanks Joe, yes definitely- kind of forgot that going up to a 275/55r20 tire will be easy to find very common size. I have every intention of keeping that tire diameter very close and for some reason missed it on my alternate sizes sheet. : )
Anyone successfully put squared setup on a new GLS63 for winter yet? Curious how the fitment went and if you had to compromise a little on the wheel offset or any other part of the package. I love the GLE 22" wheel from W166 and would love to put 4- 22" x 10" (the fronts on all 4 corners) but the offset is 56mm on that wheel (a bit much for the 45 and 47 that come from factory on X167). Seems like we're either getting a tire or a wheel but not both! haha
Anyone successfully put squared setup on a new GLS63 for winter yet? Curious how the fitment went and if you had to compromise a little on the wheel offset or any other part of the package. I love the GLE 22" wheel from W166 and would love to put 4- 22" x 10" (the fronts on all 4 corners) but the offset is 56mm on that wheel (a bit much for the 45 and 47 that come from factory on X167). Seems like we're either getting a tire or a wheel but not both! haha
previous GLS63 couldn’t take 20” rims because of brake diameter. Not sure about the x167, but just be mindful of that
Anyone successfully put squared setup on a new GLS63 for winter yet? Curious how the fitment went and if you had to compromise a little on the wheel offset or any other part of the package. I love the GLE 22" wheel from W166 and would love to put 4- 22" x 10" (the fronts on all 4 corners) but the offset is 56mm on that wheel (a bit much for the 45 and 47 that come from factory on X167). Seems like we're either getting a tire or a wheel but not both! haha
The GLE wheels from a W166 have a smaller bolt hole that will not fit also. I you search the threads you will see how you can modify these wheels to fit and what bolts to buy. You need longer bolts with spacers. I would not purchase any smaller wheels until you can test fit them over the larger brakes.
In regards to the original post, I would probably opt for all-season tires but it depends on where in the “midwest” you are (I’m guessing Chicago). There is no need to stretch the tires since that makes you more vulnerable to pot holes. Pirelli makes all-season tires for the staggered set up of the GLS 22” wheels despite how wide the rears are.
In regards to the original post, I would probably opt for all-season tires but it depends on where in the “midwest” you are (I’m guessing Chicago). There is no need to stretch the tires since that makes you more vulnerable to pot holes. Pirelli makes all-season tires for the staggered set up of the GLS 22” wheels despite how wide the rears are.
Can you help me find the item numbers or Pirelli model that has the All Season tire sizes for the 22 inch on the GLS? I would really appreciate that. I can't find any with the link you provided. GLS 22 inch are front 285/45R22 rear 325/40R22 which is the standard size but I would consider alternative. I am desperately seeking a 22 inch all season tire because I have the Summer only tires that came with the 22 inch GLS580 and won't be able to drive it soon. I normally would go south for the winter so winter tires are not any use to me but I will see some freezing weather. before I migrate south.
Can you help me find the item numbers or Pirelli model that has the All Season tire sizes for the 22 inch on the GLS? I would really appreciate that. I can't find any with the link you provided. GLS 22 inch are front 285/45R22 rear 325/40R22 which is the standard size but I would consider alternative.
Turns out when I initially responded I had checked for the GLE tire size and not the GLS tire size (or some other mistake). As you pointed out, your OEMs are 285/45R22 and 325/40R22, so the closest Pirelli would be 285/40R22 and 325/35R22, which results in a 4% decrease in diameter (57.62mph instead of 60mph). I included links below to Pirelli’s website, which has a link at the bottom to local dealerships. When you contact the local tire dealerships I would have them ensure that the tire load values (i.e., 110Y XL, 114Y XL) would work for the GLS since I don’t know how to verify that. I probably wouldn’t ask mercedes since they will probably just say that these are not certified for your vehicle and just leave it at that.
I also included two screen shots of a tire dimension tool to show: (1) the difference between OEM rear and new rear (4% smaller), and (2) how close the replacement front and rear diameters (0.1% is a very close match).
By the way, please let us know how this works out since I’m really interested in doing something similar but haven’t taken the next steps since I’m still waiting for my GLS580.
Turns out when I initially responded I had checked for the GLE tire size and not the GLS tire size (or some other mistake). As you pointed out, your OEMs are 285/45R22 and 325/40R22, so the closest Pirelli would be 285/40R22 and 325/35R22, which results in a 4% decrease in diameter (57.62mph instead of 60mph). I included links below to Pirelli’s website, which has a link at the bottom to local dealerships. When you contact the local tire dealerships I would have them ensure that the tire load values (i.e., 110Y XL, 114Y XL) would work for the GLS since I don’t know how to verify that. I probably wouldn’t ask mercedes since they will probably just say that these are not certified for your vehicle and just leave it at that.
I also included two screen shots of a tire dimension tool to show: (1) the difference between OEM rear and new rear (4% smaller), and (2) how close the replacement front and rear diameters (0.1% is a very close match).
By the way, please let us know how this works out since I’m really interested in doing something similar but haven’t taken the next steps since I’m still waiting for my GLS580.
Thank you for the information. I have researched this extensively to see what is available to be as close as possible to the original sizes. You are correct Mercedes will not give you any help they only support their tire sizes in their specification MO. What was really annoying for me was I originally ordered my GLS580 with 21 inch from the factory with all season tires as per the order guide. They would not allow the order (for Canada only) in 21 inch and I had to add 22 or 23 inch with summer only tires.
Two main issues for me when changing sizes on Mercedes. First , the Mercedes speedometers I have had are always overstating speed by 7-9 percent ( the maximum they can be out is 10%) IMO they do this to make the specs look better. The dealer confirmed this is normal for MB to have big overstatement percentage. When changing tires on MB I prefer to go taller to help improve the accuracy versus going smaller and less accurate. Second due to the complexity of the 4matic and other systems monitoring individual wheel speed it is important to have the revolutions per mile to be the same front and back. So far only one option looks reasonable but it looks like it will be a noisy tire due to the aggressive tread. 275/50R22 and 305/45R22 Nitto 420V. They are less than 2% over the original size and would make the speedo closer to being accurate. The only other reasonable thing is to replace rims and tires to 21 inch to get proper MO spec tires. I may do this if I think I can sell the 22inch rims and tires for a decent price.
I too have been struggling to get all season tires for a GLS63 being built at the end of October.
I have 22" rims on the build.
My solution:
Stock:
285/45R22 114Y XL
325/40R22 114Y XL
Available Pirelli ZERO ALL SEASON (see spec on Tire rack):
285/40R22 110Y XL. revolutions per mile = 671
325/35R22 114Y XL. revolutions per mile = 671
Resulting in tire height gain minus14.25mm (I can live with that)
Since the revolutions per mile is the same for the front and rear tires, it will not effect 4matic or other monitoring systems.
I keep hearing that the MB speedometers are off by 2mph.
I tested my current two vehicles comparing the speedometer with GPS: 2017 CLS63s and 2018 GLS63.
Both vehicles are absolutely dead on - no 2mph variation.
Therefore, the new fitment will result in:
at 30mph the speedometer reads 31.09.
at 60mph the speedometer reads 62.17.
(Again - I can live with that)
I'd like the new front tires to be 114Y rather than 110Y.
I'd rather the side wall was a little higher.
But I just won't load the vehicle to max and
I'll avoid every pothole on the road. (I wish!)
You're absolutely right.
These tires are ungodly expensive.
What I didn't say in my post - when the GLS arrives, the dealer will change out the supplied tires with the new Pirelli tires for $800.
That is the difference in price between the two tires on Tirerack. Dealer keep old, unused tires.
Then I hope there will be Continental tires for a more reasonable price by the time that the Pirellis wear out.
If I didn't get that deal I'd have to think about this as a solution!
when the GLS arrives, the dealer will change out the supplied tires with the new Pirelli tires for $800. That is the difference in price between the two tires on Tirerack. Dealer keep old, unused tires.
Such a great idea, I’m going to try to negotiate something like that into my deal. Of course it’s way more complicated for the 23” GLS wheels that I ordered.
Bob, I am strongly leaning the same way you are (I ordered a December build date GLS63 w/22"). Also, wonder if it is worth considering putting 305/40 on all 4. I show the wheel width range on that rubber to be 10-12" and diameter is -1.9% from stock?
Pirelli has a Scorpion Zero Asimmetrico in this size 114W (so gotta lift at 168mph...) : ) $1120 or so for the rubber. Worth a thought anyone?
If the original rims and tyres on a 2022 GLS is 285/45R22 for fronts and 325/40R22 for rears would it make sense to use Pirellie Zero Scorpion All Season Tyres as follows:
a. 285/45R22 for the front and 325/35R22 for the rears or
b. 285/40R22 for the fronts and 325/35R22 for the rears?
I guess I am asking if you need to shrink down the front profile by 5 if you are forced to shrink the rears by 5 as well?
It looks like you could correct your sizes above, because they're the same.
What are you trying to accomplish with all season tires instead of winter tires?
Whatever the case, I don't think 10 mm will make that much difference.
Hi Sorry, not quite sure I understand by "they're the same"? In the above example the rears are the same but the fronts have different profiles, one is 40 and one is 45.
I hope to get one All season set to have on all year round and not have to change tyres between seasons. Hope that makes sense.
Hi Sorry, not quite sure I understand by "they're the same"? In the above example the rears are the same but the fronts have different profiles, one is 40 and one is 45.
I hope to get one All season set to have on all year round and not have to change tyres between seasons. Hope that makes sense.
Apologies, I misread. I also forgot that OE 22's are Summer only.
Overall circumference matching is more important than width, and IMO the car needs more front tire, or less rear, to balance handling, so your substitution makes sense.
Don't be locked in to an "old favorite" brand, though. The last few years has seen a major improvement in tech, and some brands have leapfrogged others.
My surprise example is the OE Continentals, which went from "OK" to excellent in their All Season MO tires. And my Pirelli Winters just aren't round.
Tyrereviews.com (UK) does some excellent reviews of US tires, with a YouTube channel, for current testing. Better than TireRack, who only tests what they sell.
New member here and I have read the posts on winter set up for the GLS. I am trying to get mine dialed in and wanted to see if I could get some help and perspective on my specific model and set up.
I am thinking about the Asanti Black Label ABL-37 22 X 9 with a +38mm offset on all four corners along with…
4X Yokohama Ice Guards H075 - 285/45R22 114T XL
Not overly concerned about appearance in upper Wisconsin/Michigan winters so if there is a little tuck in or show on the quarter panels, I can live with it! Driveablity and safety are the priority.
Would greatly appreciate thoughts! Thanks in advance!
New member here and I have read the posts on winter set up for the GLS. I am trying to get mine dialed in and wanted to see if I could get some help and perspective on my specific model and set up.
I am thinking about the Asanti Black Label ABL-37 22 X 9 with a +38mm offset on all four corners along with…
4X Yokohama Ice Guards H075 - 285/45R22 114T XL
Not overly concerned about appearance in upper Wisconsin/Michigan winters so if there is a little tuck in or show on the quarter panels, I can live with it! Driveablity and safety are the priority.
Would greatly appreciate thoughts! Thanks in advance!
Get the Nokian R3 SUV.
You will be unstoppable, and they're actually kind of fun to drive.
Get the Nokian R3 SUV.
You will be unstoppable, and they're actually kind of fun to drive.
thank you very much! Love the Nokians (on my wife’s xc90). Do you feel like the wheels and tires all same size will be ok? I have the ceramic brakes as well so want to make sure I am clear.
10-01-2020, 04:33 PM
