New tires for G550 20". Suggestions appreciated.




Suggestions on size too please. Factory 275/50 or maybe 285/55.
Ride quality. Noise.
Pics appreciated.
I'm more concerned with a tire's attributes while sitting in the driver's seat, rather than while sitting in my office looking out the window at how cool the tires look when parked (many others might vehemently disagree). My experience with aggressive knobby treads is that they wear unevenly and begin to rumble. Unless you plan to do serious off-roading, stick with a more conservative tread design that performs well on wet, dry and snow covered pavement. If you're looking for a single tire to use year-round, go with an all-season, and if snow is a factor, consider an all-season with a 3 mountain peak snow-flake (3MPSF) rating, as this means the tire has been traction tested. I have Yokohama Geolander G015- tires mounted on my '19 G550, an all-terrain (A/T) 3MPSF rated 60K mile warranty tire that I run year-round in Colorado (where it can snow any day of the year), and haven't been disappointed with them.
I'm more concerned with a tire's attributes while sitting in the driver's seat, rather than while sitting in my office looking out the window at how cool the tires look when parked (many others might vehemently disagree). My experience with aggressive knobby treads is that they wear unevenly and begin to rumble. Unless you plan to do serious off-roading, stick with a more conservative tread design that performs well on wet, dry and snow covered pavement. If you're looking for a single tire to use year-round, go with an all-season, and if snow is a factor, consider an all-season with a 3 mountain peak snow-flake (3MPSF) rating, as this means the tire has been traction tested. I have Yokohama Geolander G015- tires mounted on my '19 G550, an all-terrain (A/T) 3MPSF rated 60K mile warranty tire that I run year-round in Colorado (where it can snow any day of the year), and haven't been disappointed with them.
Regarding the tire cover, not even the 275/50R20 OE tire size fits under the tire cover of my '19 G550. MB's idea of a "full-size" spare was a mis-matched Continental 265/50R20 with a "45 MPH MAX" sticker pasted on the wheel (at least the wheel matches). I ranted about this on a couple posts on the old W463 forum a couple years ago. I had a matching Yoko mounted on the spare wheel and bought an aftermarket tire cover from Boomerang (I posted some pics of this also on one of the forums). Check what's under your spare tire cover -- I'd be interested to know.
The lunacy of this mis-matched spare is what do you do with the spare tire cover when you replace a flat with the Continental spare and hang the Pirelli on the spare mount? The cover won't fit, so you shove it into the cargo area on top of your luggage where it can slide forward and decapitate one of your kids or dogs in the back seat.
Last edited by streborx; Jan 18, 2024 at 11:45 AM.
Regarding the tire cover, not even the 275/50R20 OE tire size fits under the tire cover of my '19 G550. MB's idea of a "full-size" spare was a mis-matched Continental 265/50R20 with a "45 MPH MAX" sticker pasted on the wheel (at least the wheel matches). I ranted about this on a couple posts on the old W463 forum a couple years ago. I had a matching Yoko mounted on the spare wheel and bought an aftermarket tire cover from Boomerang (I posted some pics of this also on one of the forums). Check what's under your spare tire cover -- I'd be interested to know.
The lunacy of this mis-matched spare is what do you do with the spare tire cover when you replace a flat with the Continental spare and hang the Pirelli on the spare mount? The cover won't fit, so you shove it into the cargo area on top of your luggage where it can slide forward and decapitate one of your kids or dogs in the back seat.
I will have a look at my spare and let you know. Driving with a mismatched diameter spare on a 4WD truck isn’t my favorite idea, but I guess that’s the way it goes unless I buy another cover like you.
Last edited by Dewilmoth; Jan 18, 2024 at 11:57 AM.




Regarding the tire cover, not even the 275/50R20 OE tire size fits under the tire cover of my '19 G550. MB's idea of a "full-size" spare was a mis-matched Continental 265/50R20 with a "45 MPH MAX" sticker pasted on the wheel (at least the wheel matches). I ranted about this on a couple posts on the old W463 forum a couple years ago. I had a matching Yoko mounted on the spare wheel and bought an aftermarket tire cover from Boomerang (I posted some pics of this also on one of the forums). Check what's under your spare tire cover -- I'd be interested to know.
The lunacy of this mis-matched spare is what do you do with the spare tire cover when you replace a flat with the Continental spare and hang the Pirelli on the spare mount? The cover won't fit, so you shove it into the cargo area on top of your luggage where it can slide forward and decapitate one of your kids or dogs in the back seat.
There are other options, such as the LeTech mount, but I wanted to keep the sun off my spare. UV is really brutal in Colorado at 7000 feet.
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Regarding the tire cover, not even the 275/50R20 OE tire size fits under the tire cover of my '19 G550. MB's idea of a "full-size" spare was a mis-matched Continental 265/50R20 with a "45 MPH MAX" sticker pasted on the wheel (at least the wheel matches). I ranted about this on a couple posts on the old W463 forum a couple years ago. I had a matching Yoko mounted on the spare wheel and bought an aftermarket tire cover from Boomerang (I posted some pics of this also on one of the forums). Check what's under your spare tire cover -- I'd be interested to know.
The lunacy of this mis-matched spare is what do you do with the spare tire cover when you replace a flat with the Continental spare and hang the Pirelli on the spare mount? The cover won't fit, so you shove it into the cargo area on top of your luggage where it can slide forward and decapitate one of your kids or dogs in the back seat.
Like you, I have a 265/50-20 spare. Luckily it is mounted on a matching AMG Twin 5-spoke wheel, I’ve noticed some are not necessarily matching.
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