TIRE SIZE HELP
Thread Starter
Junior Member
Joined: Mar 2023
Posts: 43
Likes: 1
W204 c350 coupe, w218 cls63s
TIRE SIZE HELP
So I brought my car to my mechanic to get lowering springs installed and an alignment done, and while I was there my mechanic noticed that I was running 235/35/19 and 265/30/19 on the rear and said that I need to get 255/30/19 for the rear since it says that in the owner manual and that mine are too big.
I have a 13 c350 coupe 4matic and before I got this setup I did research and found that this setup is common which is why I got it. My mechanic said that if I don’t switch from 265 to 255, it will ruin my transmission and 4matic system. Does anyone know if this is true because like I said it’s a common setup on these cars.
I just want others opinions before I drop another $1000 on 2 tires
I have a 13 c350 coupe 4matic and before I got this setup I did research and found that this setup is common which is why I got it. My mechanic said that if I don’t switch from 265 to 255, it will ruin my transmission and 4matic system. Does anyone know if this is true because like I said it’s a common setup on these cars.
I just want others opinions before I drop another $1000 on 2 tires
MBWorld Fanatic!
Joined: Aug 2023
Posts: 3,888
Likes: 1,206
From: MA Coast
W204 2010 C300 4matic Sport M272
I have no idea if not going with the manufacturer spec'd tire will ruin anything. But when you look at the diameter of each tire:
235/35R19 647mm 25.5" Front
265/30R19 643mm 25.3"
255/30R19 637mm 25.1"
Unless my research is wrong in the numbers, the 265/30R19 is closer in diameter to the front tire size. But like I said I have no idea if changing things will screw something up, are things set up specifically for that sized tire?
235/35R19 647mm 25.5" Front
265/30R19 643mm 25.3"
255/30R19 637mm 25.1"
Unless my research is wrong in the numbers, the 265/30R19 is closer in diameter to the front tire size. But like I said I have no idea if changing things will screw something up, are things set up specifically for that sized tire?
Thread Starter
Junior Member
Joined: Mar 2023
Posts: 43
Likes: 1
W204 c350 coupe, w218 cls63s
I have no idea if not going with the manufacturer spec'd tire will ruin anything. But when you look at the diameter of each tire:
235/35R19 647mm 25.5" Front
265/30R19 643mm 25.3"
255/30R19 637mm 25.1"
Unless my research is wrong in the numbers, the 265/30R19 is closer in diameter to the front tire size. But like I said I have no idea if changing things will screw something up, are things set up specifically for that sized tire?
235/35R19 647mm 25.5" Front
265/30R19 643mm 25.3"
255/30R19 637mm 25.1"
Unless my research is wrong in the numbers, the 265/30R19 is closer in diameter to the front tire size. But like I said I have no idea if changing things will screw something up, are things set up specifically for that sized tire?
Joined: Nov 2016
Posts: 7,847
Likes: 3,499
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Easy. What did the car come with? Check the VIN on www.lastvin.com and look to see if you have staggered wheel sizes.
Generally, AWD cars will have the same size front and rear for the reason he gave, but see what Mercedes says by looking at the car’s configuration.
Generally, AWD cars will have the same size front and rear for the reason he gave, but see what Mercedes says by looking at the car’s configuration.
Joined: Nov 2016
Posts: 7,847
Likes: 3,499
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I have found that Mercedes dealers (or at least mine) have very competitive pricing on tires and may further discount things like an alignment if done when you buy the tires.
Last edited by JettaRed; Aug 17, 2023 at 10:34 AM.
