Winter tire setup - 235/40 & 255/35 on 19"?
I had these on my previous car (5.0 v8 rwd) and they performed very well in snow, rain and dry. I will probably get them again for the c63.
https://www.tirerack.com/tires/tires...inter+Sport+3D
edit....this size might be an issue since the rears should be a 30 series tire.
Last edited by bentz69; Sep 29, 2017 at 09:29 PM.
These highways are restricted this way because of significant elevation changes that produce the deadly combination of ice plus steep grades plus lots of curves. Fun in Summer but not so much on winter snow and ice!
I've been wondering about the optimal sizes front and rear.
Jim G
General consensus is running a square setup in winter on dedicated 18's (more tire options). Either 225/40/18 or 235/40/18 all around.
Good luck with your search.
Last edited by toosteeley; Sep 30, 2017 at 11:19 AM.
I have stock, staggered tire sizes on my car for winter. Since I'm not driving in deep snow, it's swept snow or cold pavement, the stock setup is better on the stock wheels.
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General consensus is running a square setup in winter on dedicated 18's (more tire options). Either 225/40/18 or 235/40/18 all around.
Good luck with your search.
The Best of Mercedes & AMG
https://mbworld.org/forums/c63-amg-w...ed-advice.html
Last edited by toosteeley; Sep 30, 2017 at 02:53 PM.
General consensus is running a square setup in winter on dedicated 18's (more tire options). Either 225/40/18 or 235/40/18 all around.
Good luck with your search.
As far as my setup is concerned, I have a 275/30/19 on the rear right now and plan to switch to a 235/35/19 winter tire (dunlop wintersport 3d). According to https://tiresize.com/calculator/ and using the tire comparion option, it shows the following,

Sidewall height appears to stay the same so this combo should work fine without upsetting the abs or esp
As far as my setup is concerned, I have a 275/30/19 on the rear right now and plan to switch to a 235/35/19 winter tire (dunlop wintersport 3d). According to https://tiresize.com/calculator/ and using the tire comparion option, it shows the following,

Sidewall height appears to stay the same so this combo should work fine without upsetting the abs or esp
https://mbworld.org/forums/c63-amg-w...ed-advice.html
If the OP isn't gonna buy new wheels, a square setup would mean stretched tires on the rear.
Maybe now you understand?
I will definitely concede it depends on the type of winter driving (snow vs ice vs wet roads).
IMO it's always better to get a dedicated set of winter rims and tires. Not only will an 18" set provide more tire options and make it easier to swap on and off, but will save the finish on the 19's. It's worth the $$ if you ask me.
The OP asked for opinions, I gave mine. My opinion isn't incorrect, just differs from yours and the OP.
- The 18" wheels are at least theoretically not going to provide performance as good as the 19" AMG wheels, unless you spend a LOT of money on the 18"ers
- Unless you spend a LOT of money on the winter wheels, they are not going to look nearly as good as the 19" AMG wheels
- If you DO spend a lot of money to get good performance and/or appearance, you'd better at least keep the car for a while to amortize the cost down to something sensible. In my case, where I rarely keep a car for more than a couple of years, spending big bucks on a set of snow wheels, and getting almost nothing for them when I sell the car, is hard to justify
- I can see an argument for keeping the nice 19" AMG wheels out of winter road salt, but then you will instead either corrode ANOTHER set of nice & therefore also costly wheels, or you will run around all winter with ugly cheap wheels on your pride and joy, which sort of takes the air out of the "preserve the nice wheels" argument
- If you decide to accept the lowered performance and/or the visual negatives, they ARE significant because if you live where snow tires are needed, you are going to have them on the car for at least half the year (October through March)! You bought the car to enjoy it. Why accept a reduction in that enjoyment for FIFTY PERCENT of the time you use the car, without looking for a better solution?
There are no clear winning strategies here if you live where it snows and/or ices.
Jim G
This is why the highest performance models in a car maker's lineup, and also the high performance options packages always have larger wheels.
Dragracing is NOT the same as street or track handling. In dragracing, by definition, you are going in only a straight line, and there are no pavement variations. Your primary, almost ONLY objective is TRACTION. That's a very narrow objective compared to what the street and the road race track require. Your comparison is not meaningful in any way.
Jim G

And you sure as hell see the difference in the appearance of 18" versus 19" ALL the time.
Jim G
Note the rear axle ratio is 2.82. This is surprisingly low for a performance car, even with a 6.2 liter engine displacement, and especially for one that starts in SECOND gear when in Comfort mode.
Most modern performance cars have rear axle ratios in the 3.00 to 3.73 range. I guess that the variable valve timing system works really well at lower rpm.
Jim G










You can easily find a set of 18" rims for under $1000 to mount winters on. Well worth it IMO.


