E550 18" Alternative Tire Sizes
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2012 E550 4matic
Hah. You ain't lying my friend lol. I rarely run into em in Dallas. Mostly Q60s and Challenger RTs. No fun. The occasional BMW and Camaro SS but again ...bleh mostly. It is fun to beat them yes but still lol I prefer my luxury cruiser that happens to have a silverback under the hood.
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2012 E550 4matic
check this out, this is the best site I know of for custom wheel fitment as it has the most variables for input. You can see Keys wheel/tire setup on the left and mine on the right. You are correct about the offset, I've been saying it backwards. More positive is further from suspension and closer to fender.
https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm
I've set the fender clearance where mine will rub and you can see there is 17mm clearance on Key's wheel(this is just a representation since it is actually the tire on my car that rubs). So I may have been mistaken on being able to fit a spacer on the AMG wheel as I honestly did not expect that much positive offset...+52 is a lot!
https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm
I've set the fender clearance where mine will rub and you can see there is 17mm clearance on Key's wheel(this is just a representation since it is actually the tire on my car that rubs). So I may have been mistaken on being able to fit a spacer on the AMG wheel as I honestly did not expect that much positive offset...+52 is a lot!
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Yep, it’s those tools that lead me to know I could add a 15mm spacer on those rear wheels and get it to be flush. I’m on springs and not Airmatic. I am not lowered, it is the stock suspension.
The lower the offset number, the further OUT the wheel will sit. Higher number, sits further in.
One more issue to consider with wide front tires. They may cause the car to tramline or dart around on roads with uneven pavement. My Shelby has 295 on the front and 305 on the rear. Wheels are 10.5 and 11.
i have to keep both hands on the wheel at all times. Just tossing that out. In road racing the wider tire provides more contact patch and grip.
The lower the offset number, the further OUT the wheel will sit. Higher number, sits further in.
One more issue to consider with wide front tires. They may cause the car to tramline or dart around on roads with uneven pavement. My Shelby has 295 on the front and 305 on the rear. Wheels are 10.5 and 11.
i have to keep both hands on the wheel at all times. Just tossing that out. In road racing the wider tire provides more contact patch and grip.
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2012 E550 4matic
Yep, it’s those tools that lead me to know I could add a 15mm spacer on those rear wheels and get it to be flush. I’m on springs and not Airmatic. I am not lowered, it is the stock suspension.
The lower the offset number, the further OUT the wheel will sit. Higher number, sits further in.
One more issue to consider with wide front tires. They may cause the car to tramline or dart around on roads with uneven pavement. My Shelby has 295 on the front and 305 on the rear. Wheels are 10.5 and 11.
i have to keep both hands on the wheel at all times. Just tossing that out. In road racing the wider tire provides more contact patch and grip.
The lower the offset number, the further OUT the wheel will sit. Higher number, sits further in.
One more issue to consider with wide front tires. They may cause the car to tramline or dart around on roads with uneven pavement. My Shelby has 295 on the front and 305 on the rear. Wheels are 10.5 and 11.
i have to keep both hands on the wheel at all times. Just tossing that out. In road racing the wider tire provides more contact patch and grip.
Also yeah I know wider tires tend to have that issue. But I'm not putting wider tires in the front. Only the rear now
Last edited by VW2MB; Oct 28, 2020 at 11:35 PM.
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I literally cannot find a way to work this damn site lol how do you come up with the numbers on the side there? The suspension clearance, the fender clearance and all those. Are those what you have to physically take measurements of and input them? Or does it self populate depending on wheel size? I changed the width of the tire and the width of the fender also changed.
Also yeah I know wider tires tend to have that issue. But I'm not putting wider tires in the front. Only the rear now
Also yeah I know wider tires tend to have that issue. But I'm not putting wider tires in the front. Only the rear now
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2012 E550 4matic
All were self populated. I only manipulated the numbers to get the interference with my tire and the fender(red lines fender). If you increase the fender clearance, you'll see the red line turn black. You can take true measurements from the car and input them in the boxes, just measure the spaces that are illustrated and input the numbers. Like I said before, I was just using it to show the idea if the difference where the wheels sit in relation to the fender and the wheels giver measurements and offset. Even the scrub angle is adjustable, but I'm not sure what that is on the W212. Probably something you could find by searching the internet though.
Or is there some way of using math to reverse the measurements of your tire and wheel to come up with stock figures? Especially since we know the stock wheel offset and size..
EDIT: Apologies, didn't scroll all the way to the bottom of the page. The numbers there explain everything. Thanks for your patience. Lol. However my last point may still be valid. By working in reverse could one potentially come up with the stock clearances by using your numbers? Or is that 50mm of suspension clearance just a generic figure
Last edited by VW2MB; Oct 29, 2020 at 01:48 PM.
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2013 SL550 BiTurbo
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2012 E550 4matic
Gotcha. Will have to take some measurements today. Even though here in Dallas it's about 40degrees minus the wind-chill smh. Last question, just came across interesting info, when running staggered wheels on the 4Matics, is it the measurements in relation to the front and rear diameter that matter? Or is the the relation to the OE overall diameter? As in, do the new tires have to be within .1 of each other? Or of the OE diameter?
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Has nothing to do with OE at this point unless you are way off and it affects your speedo.
They need to be as close to zero difference. That will be impossible, but some say 1%, 2% is not a problem. Better to err on the safe side.
They need to be as close to zero difference. That will be impossible, but some say 1%, 2% is not a problem. Better to err on the safe side.
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2012 E550 4matic
So you're saying ...hypothetically speaking, I could put 255s up front...and 305s in the rear as long as clearance wasn't an issue and the overall diameters were within .1-.2 of each other?
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Pretty cold here in Austin too...although it did not stop me from building and testing my intake today...wow...I ran 60-130 and it was OVER a second faster. It was about 2° downhill so it was not "certified" but holy crap it pulls up top now. More testing tonight and tomorrow will give me more info to share, but it is looking VERY good as of what I have now. I'll post more tomorrow.
Last edited by nota_amg; Oct 29, 2020 at 09:40 PM.
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2012 E550 4matic
That is the general school of thought, yes
Pretty cold here in Austin too...although it did not stop me from building and testing my intake today...wow...I ran 60-130 and it was OVER a second faster. It was about 2° downhill so it was not "certified" but holy crap it pulls up top now. More testing tonight and tomorrow will give me more info to share, but it is looking VERY good as of what I have now. I'll post more tomorrow.
Pretty cold here in Austin too...although it did not stop me from building and testing my intake today...wow...I ran 60-130 and it was OVER a second faster. It was about 2° downhill so it was not "certified" but holy crap it pulls up top now. More testing tonight and tomorrow will give me more info to share, but it is looking VERY good as of what I have now. I'll post more tomorrow.
Ooh that sounds promising. Please do report back with more.
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2012 E550 sedan 2019 E63 Wagon
Sorry to bring this back (been only 3 days but).
Anyone here on Airmatic? I want to go with this setup: https://www.fitmentindustries.com/bu...5x4.41%2C5x112
Anyone here on Airmatic? I want to go with this setup: https://www.fitmentindustries.com/bu...5x4.41%2C5x112
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2012 E550 4matic
So after doing even more research, I've come to a light conclusion that 255s WILL fit up front on 18s. 255/40/18 to be exact. So in that case 255/35/19 should also since they are the same in width/diameter. Think I've decided to go with 255/35/19 up front and 295/30/19 in the rear. It's not set in stone as I still have yet to measure for exact clearances in the rear, but the fronts have been used on multiple other members' fronts and don't rub at all. Initially thought of going 255/40/18 and 295/35/18 in the rear. But I believe that's listed at 26.0 and 26.1 in the rear. Not sure how that'll play out. Would love to have more meat in the tires though.
Now it's just about which brands to go with on wheels/tires. And also what width to go with. The rears I'm thinking 10" and the fronts probably at 9. Considered sticking with continental as they have some pretty wide tires at the same width. And also to find which offsets cause those tire sizes to work easily. I'll continue to do more research and post back with findings.
Now it's just about which brands to go with on wheels/tires. And also what width to go with. The rears I'm thinking 10" and the fronts probably at 9. Considered sticking with continental as they have some pretty wide tires at the same width. And also to find which offsets cause those tire sizes to work easily. I'll continue to do more research and post back with findings.
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2012 E550 4matic
Quick question though, does anyone know if the revolutions per mile being a smidge different would matter much? As in, 798front and 800rear. Would there make much of a difference? 26" and 26.1"?
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2012 E550 4matic
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2012 E550 4matic
Decided to go with 255/35/19 up front and 295/30/19 in the rear. Sumitomo HTR Z5. Wanted to go continental 5p as they are even wider at the given size, but got a great deal with the sumis. Will be finding wheels but probably sticking with the E63 OE offset for the rear at 52.
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2012 E550 4matic
Offsets that I'll more than likely be going with are +36-40 in the front at 19x9 and +50-52 in the rear at 19x10. So to combine all the stats. The overall result should look similar to this...pushed the fronts further out than my initial 44 since I'm widening the wheels to 9in. That extra half inch is 12.7mm so theoretically pushing the offset out by about 11-12 should offset that...no pun intended lol
FRONTS
255/35/19
19x9 +37
REARS
295/30/19
19x10 +52
FRONTS
255/35/19
19x9 +37
REARS
295/30/19
19x10 +52
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2012 E550 4matic
Just to provide an update of sorts. Just got my tires in today. Decided to go with Michelin Pilot Sport 4S. Currently speaking with some wheel vendors to see what offset and wheel options there are. Prefer the +37 F and +52 R. Maybe even +50
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2012 E550 4matic
Long awaited update. Hopefully this can help someone in the future.
Got Michelin Pilot spot 4s at 255/35/19 for the fronts and 295/30/19 for the rears. Front wheel size is 19x9 @ +38 and the rear is 19x10 @ +48. Perfect fitment all the way around. No rubbing and no scraping. Not contacting anything. The clearance in the front is incredibly close yet with my sport suspension apparently it's enough to keep the car from squatting down on the tires. Rear has about an inch and a half before it touches anything on the inside. Would just be a piece of fender liner anyway. Completely happy with the result I must say. I probably could've went with a 10.5 wheel to be honest and it would've fit. 11 would really be pushing it. The fronts however, I don't see many going wider/larger than that. After getting the tires mounted...I really wish the tires were as wide as they were pre-mount. As the tires can only ever be as wide as the rim really maybe a smidge over until it starts spilling into unsafe territory. Mine has a smidge of bulge which I love! Just, a 12" tire on a 10" wheel doesn't let the tire be as wide as it could be when viewing from the rear. That porsche look is what I was after and I definitely got close. All in all, I'm satisfied and the ride quality is actually smoother yet firmer if that makes any sense. Tires have about a couple hundred miles on them now so they should have the protective coating lifted and be well broken in. Time to really put them to the test.
Got Michelin Pilot spot 4s at 255/35/19 for the fronts and 295/30/19 for the rears. Front wheel size is 19x9 @ +38 and the rear is 19x10 @ +48. Perfect fitment all the way around. No rubbing and no scraping. Not contacting anything. The clearance in the front is incredibly close yet with my sport suspension apparently it's enough to keep the car from squatting down on the tires. Rear has about an inch and a half before it touches anything on the inside. Would just be a piece of fender liner anyway. Completely happy with the result I must say. I probably could've went with a 10.5 wheel to be honest and it would've fit. 11 would really be pushing it. The fronts however, I don't see many going wider/larger than that. After getting the tires mounted...I really wish the tires were as wide as they were pre-mount. As the tires can only ever be as wide as the rim really maybe a smidge over until it starts spilling into unsafe territory. Mine has a smidge of bulge which I love! Just, a 12" tire on a 10" wheel doesn't let the tire be as wide as it could be when viewing from the rear. That porsche look is what I was after and I definitely got close. All in all, I'm satisfied and the ride quality is actually smoother yet firmer if that makes any sense. Tires have about a couple hundred miles on them now so they should have the protective coating lifted and be well broken in. Time to really put them to the test.
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2012 E550 4matic
Front left turning clearance
Front left tire clearance
Rear tire clearance
Alot of my pictures wouldn't upload for some reason. Stops at 50% so I'll have to find another way. But these should suffice
