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Hey everyone, I have a 2014 E550 4Matic. I also have the 19" e63 wheels as shown below: I have a question on tire size.
I was hoping to run size 245 35 19s on the front and 285 30 19s on the rear to keep the diameter as close as possible for the benefit of the 4matic system. I explained this quandary to the tire shop. The shop recommended just ordering the factory e63 tire size of 255 35 19 on the front and 285 30 19 on the rear (instead of my 245 35 19 front tire choice). The factory sizes result in a 1% difference between front and rear tires; whereas my selection of the 245 35 19s results in a smaller, .4% difference in diameter. I selected this size with input from others on here (thanks KEY08).
This tire size (255 35 19 front) and wheel combination was available on the e63 S AWD vehicles so I am wondering if in selecting the slightly better matched 245 35 19s, am overthinking it? Thoughts?
Last edited by machinemanjr; Feb 16, 2021 at 11:42 AM.
I run 255/35 front and 285/30 rear same as a 212 E63 and i have no issues what so ever . The 4-matic system is completely the same for both E550 and E63 excluding the power distribution .
Hey there. Nice wheels!
I chose the 245/35 and 285/30 for the specific reason you referenced. The 255 width is no issue on the E63 because the fenders are wider and not the same as the E550. I'm sure you could probably squeeze the 255's in the E550 fender well but it may be tight. I just didn't want to mess with the fitment or the higher difference in front to rear circumference. If you go with your tire shop guys suggestion make sure he is on the hook if they rub.
Key08, thanks for that. The shop mentioned that the 245/35 tire in the tire I wanted didn't meet the factory load rating of 96 for the front. The tire I wanted in the 345/35 size was only a 93 load rating, whatever that means. Bumping up to the 255 met the 96 load rating requirement. That's what started this down the rabbit hole... Thanks for the tip on the fenders, I had not thought of that.
Yeah the load rating is always an issue on these big MB sedans, so that was good advice. My fronts may be slightly off the load rating, but not much. Some people have tried to mount the E63 AMG bumper up to the 550 because they like the look only to find out it does not fit to the 550 style fenders. Sounds like you have a recommendation from a member here that they will fit just fine, so you should be able to go that route.
Yeah, Mercedes is very safety conscious and must consider that these heavy cars are driven spiritedly (fast...), so they require the 96 Load and XL rating, whereas other sedan manufacturers do not. It is part of owning a Mercedes. The 93 rated tire is only rated 130# or so less than the 96 , so not a lot of difference in all reality. 90% of the time I am in my car by myself and never load the car up with passengers and baggage, or drive like NASCAR to test the maximum limits of tire loads. Higher performance cars that weigh considerably less than these big sedans often have higher load rating requirements. A Porsche 911 and even my Shelby GT350 require 103Y load rated tires due to perceived loading during spirited driving (heavy braking and cornering). I try to stay within the limits of the required load rating, but do stray from time to time. Tire shops will generally only mount up tires that meet all of the manufacturers specifications due to liability.
I've got turned down by Discount Tire, and Costco because I have a Staggered 18" setup (similar to RWD E350) on my 4Matic (which is an upgrade from 17" factory square setup).
They both argued that the load rating is the problem and their systems throw an error for any load rating less than 100, which factory tires are 95s and 97s..
Thought of starting a new thread, but sorry to hijack your thread.
EDIT:
NTB Quoted $920 A/S 4.
Firestone quoted $1089 for Potenza. But she told me to visit after March 11th for $100 rebate program.
My front's are running 2/32s and the rears are 3/32s. I can wait a couple of weeks, but when is the best time for tire deals?
Last edited by raja777m; Feb 19, 2021 at 11:01 AM.
I run 245/35R19(8.5") fronts and 285/30R19(9.5") rear in the Kumho Ecsta PS91, which is available in the XL Load range.
They are excellent in the dry and wet(3.1seconds 0-60 with TCU tune). I highly recommend them if you don't want to pay Goodyear/Michelin prices.
Good to know... I want a good all season tire. I had decided on Bridgestone Potenza RE980AS which do not have an XL load rating in the 245/35 size. I might need to keep shopping.
Good to know... I want a good all season tire. I had decided on Bridgestone Potenza RE980AS which do not have an XL load rating in the 245/35 size. I might need to keep shopping.
The Ecsta PS91's are NOT All Season tires, FYI. They are Ultra High Performance Summer Tires, they DO NOT like freezing temps.
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
my favorite all season grand touring tires are the michelin primacy all seasons... or the premiere A/S. birdgestone turanza are good too. no idea if they are in XL in that odd size you want.
hah, whoa... tirerack doesn't have ANY 'all season' tires to fit a 19" staggered facelift 212 4matic, they are all ultraperformance summer. they recommend a 245/35ZR19 (93Y) XL front, with 275/30ZR19 (96Y) XL rear, and these both have significantly less weight capacity than the 1709 lbs my stock 17" have.
my favorite all season grand touring tires are the michelin primacy all seasons... or the premiere A/S. birdgestone turanza are good too. no idea if they are in XL in that odd size you want.
hah, whoa... tirerack doesn't have ANY 'all season' tires to fit a 19" staggered facelift 212 4matic, they are all ultraperformance summer. they recommend a 245/35ZR19 (93Y) XL front, with 275/30ZR19 (96Y) XL rear, and these both have significantly less weight capacity than the 1709 lbs my stock 17" have.
That is the problem. Summer tires, for the mixed climate where I live is pretty pointless. I want a good quality all season. I plan to use the factory 18" wheels to run my Nokian snow tires.
Hard with the odd ball size... Maybe I shouldn't over think it since I never max out the vehicle weight wise and never drive 140 MPH in 100 degree weather at full load.
I've got turned down by Discount Tire, and Costco because I have a Staggered 18" setup (similar to RWD E350) on my 4Matic (which is an upgrade from 17" factory square setup).
They both argued that the load rating is the problem and their systems throw an error for any load rating less than 100, which factory tires are 95s and 97s..
Thought of starting a new thread, but sorry to hijack your thread.
EDIT:
NTB Quoted $920 A/S 4.
Firestone quoted $1089 for Potenza. But she told me to visit after March 11th for $100 rebate program.
My front's are running 2/32s and the rears are 3/32s. I can wait a couple of weeks, but when is the best time for tire deals?
I have a 13 E550 Coupe with the OEM staggered 18" set-up. I went to Discount Tire after talking to a H.S. friend who is the V.P. of Automotive Services for a BIG wharehouse retailer. This is the tire he steered my to since they can't be rotated and whatever tire I bought would last 30K miles max. Discount tried to steer me to their Barium line since it's a Continental built tire exclusive to Discount. I made them beat Walmarts price and the cost of 4 new tires was $372.00. Out the door mounted and balanced with certificates for $500.00 ish.I've had them one for about a month now and I'm impressed. Yesterday after the car sitting in the garage for 5 days, I went out and I'll be damned they weren't cold/flat spotted like the OEM Michelins I replaced. I actually ate a lil crow last night and sent my friend a text saying I was impressed. He replied " I *** told you so! We'll be carrying them in the near future as a low cost alternative to Michelin and Bridgestone." I have no idea if the sedan load rating is different than the coupes, but they are XL rated.
I run 255/35 front and 285/30 rear same as a 212 E63 and i have no issues what so ever . The 4-matic system is completely the same for both E550 and E63 excluding the power distribution .
Wow!
I did not know this.
Is this true for the earlier models (2010 - 2011)?
Reason I ask is I understand the transfer case / transmission changed from these years.
I want to run 255/35/19 and 285/30/19 on a 2010 E550 4matic but concerned about damage / taxing the transmission.
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
Originally Posted by Amr_c63
I run 255/35 front and 285/30 rear same as a 212 E63 and i have no issues what so ever . The 4-matic system is completely the same for both E550 and E63 excluding the power distribution .
those are both 18" ? I show a 1.2% difference in diameter (25 vs 24.7 inches), or 806 rev/mile vs 816 rev/mile
Originally Posted by retna7
I want to run 255/35/19 and 285/40/19 on a 2010 E550 4matic but concerned about damage / taxing the transmission.
those sizes show a 7.7% difference in diameter (26 vs 28"), or 775 vs 721 rev/mile.
I understand most people shoot for less than 1% diameter difference but this is the OEM AMG fitment. I never knew the 550 and AMG shared transmissions.
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
as I understand it, the AMG has a electronic clutch instead of a torque converter, but yeah, the trans itself is basically the same, albeit a beefed up version to handle 600 ft-lbs.
as I understand it, the AMG has a electronic clutch instead of a torque converter, but yeah, the trans itself is basically the same, albeit a beefed up version to handle 600 ft-lbs.
Interesting.
So would I be damaging the 2010 E550 transmission with the 1.2% difference in diameter?
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