5% Tire-Size Uprate
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Joined: Nov 2022
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2019 Mercedes E53 AMG
5% Tire-Size Uprate
Howdy y'all. I hate to do it but I gotta make the first post on the new car about the tires, in spite of the numerous other posts about tire/wheel fitment on these.
Right now, I've got the factory size wheels/tires on it - 245/40R19 in the front, 275/35R19 in the back. I'm interested to see if anyone has any experience moving up 5% in sidewall height - new sizes would be 245/45R19 front and 275/40R19 in the rear. This would naturally decrease the fender well clearance, but I'm not sure by how much and how much of a problem it would be. 35% sidewall is a super bummer in the land of potholes and ****-poor roads. Anyone know if I can safely move up 5% without rubbing? I don't have any lowering mods or any of that silliness.
Right now, I've got the factory size wheels/tires on it - 245/40R19 in the front, 275/35R19 in the back. I'm interested to see if anyone has any experience moving up 5% in sidewall height - new sizes would be 245/45R19 front and 275/40R19 in the rear. This would naturally decrease the fender well clearance, but I'm not sure by how much and how much of a problem it would be. 35% sidewall is a super bummer in the land of potholes and ****-poor roads. Anyone know if I can safely move up 5% without rubbing? I don't have any lowering mods or any of that silliness.
Junior Member
Joined: May 2017
Posts: 23
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From: Atlanta
2021 E53 AMG sedan
Oops, I didn't attach it. Here it is: https://tiresize.com/wheel-offset-calculator/
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From: San Francisco Bay Area
2019 C63CS
Plug in the sizes here https://tiresize.com/calculator/ (use the Tire Comparison tab) and you can see the resulting dimensions and speedometer error. Going from 35 to 40 in the rear for example gives you 0.5" inch more sidewall. Let's be honest, that's not gonna do much if potholes are a regular occurrence on your roads. You can increase tire pressure, or realize that a car with low profile tires may not be the right choice for the roads you are driving on.
Last edited by superswiss; Mar 20, 2026 at 11:03 AM.
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Joined: Mar 2026
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From: Alvaton, GA
2018 E63 S AMG Estate
I have used https://www.wheel-size.com/calc/ numerous times to research wheel and tire combinations and calculate their fitment. The main site lists OEM wheel and tire sets for most manufacturers, and the calculator offers the ability to set detailed clearances for your wheel well & suspension geometry. Combining these visuals with the comparison data at the bottom of the page has helped me make challenging decisions with confidence for many vehicles over the last decade.
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Joined: Nov 2022
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2019 Mercedes E53 AMG
The difference 5% makes might be small, but they do make a difference for ride quality, protection of your rims, and prevention of catastrophic blowouts on potholes, of which there are many where I live.
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Yeah, a 5% tire-size uprate is doable on the newer MBs, but I recall it being a bit tricky on the SQE suspension models from 2021+ due to the tighter tolerances, so keep an eye on clearance and ride height. It's also worth noting that some folks have reported issues with the MB Tire Pressure Monitoring System after a size increase, just something to consider.
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Joined: Oct 2019
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From: Colorado
G550
You might look into 18" wheels as an alternative. And if you're running on runflats, try non-runflats. If your sidewalls are already short, reducing your tire pressure can soften the ride, but expose you to wheel damage.
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Joined: Nov 2022
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2019 Mercedes E53 AMG
Yeah I believe the E53 also rides about an inch or so lower when at high speeds (Dynamic Select setting does not appear to change this to my knowledge but does affect suspension firmness obviously), and I don't want to throw a tire on that will be a problem if the car lowers itself. I thought about 18in wheels but those may have clearance issues with the brakes, although my 2017 E300 had the AMG sport package (AMG wheels/brakes/etc.) and had 18s from the factory so maybe that 's worth a look. I don't believe I'm running run-flat right now (I usually don't due to ride quality) but I will check my current tires. I need to replace them all anyway as the dealer just told me that I have four different tires on it... whoever owned this before me was thin in the brain cells department.
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From: Canada
2023 E63S Wagon
Here's a thread someone upsized 5% on E63 20" rims
https://mbworld.org/forums/w213-amg/...ire-setup.html
And here's pictures what it looked like after regarding clearances:
https://mbworld.org/forums/w213-amg/...ml#post8866442
Enjoy!
https://mbworld.org/forums/w213-amg/...ire-setup.html
And here's pictures what it looked like after regarding clearances:
https://mbworld.org/forums/w213-amg/...ml#post8866442
Enjoy!
Out Of Control!!
Joined: Nov 2018
Posts: 11,432
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From: San Francisco Bay Area
2019 C63CS
Yeah I believe the E53 also rides about an inch or so lower when at high speeds (Dynamic Select setting does not appear to change this to my knowledge but does affect suspension firmness obviously), and I don't want to throw a tire on that will be a problem if the car lowers itself. I thought about 18in wheels but those may have clearance issues with the brakes, although my 2017 E300 had the AMG sport package (AMG wheels/brakes/etc.) and had 18s from the factory so maybe that 's worth a look. I don't believe I'm running run-flat right now (I usually don't due to ride quality) but I will check my current tires. I need to replace them all anyway as the dealer just told me that I have four different tires on it... whoever owned this before me was thin in the brain cells department.
