20 " rims

[MADSLEG]

John_Best - 7/2/2005 1:39 AM

For safety sake the golden rule is that when you increase stock wheel size by X2 you MUST increase your brake disk diameter - or you defy the vehicle's design thresholds and create an unsafe situation.

BTW - the 'swim' effect is also know sometimes as 'bumpsteer' and is common among lower profile tires - there is usually a steering brace that is needed to correct this and at highway speeds this characteristic can be dangerous. I would consult the AMG house or see if there is an additional brace available from a dealer.

You are serious? I thought I simply put wheels on and thats all........

Anyone whom got 20s did anything from listed above???

[pleubner]

You bet!I got 20' brabus monoblock IV, and like I said above the car seems to follow anything on the road.

I also have low profile typres, and the now getting pretty worn (from what I read so far on this thread , the worst combination!)

Must check out that brace thing!.

[mclasser]

if u have tires and rims bigger than the recommended 255 tire spec, wont it cause the ETS or ESP light to go off?

[candrews]

That's what I'm worried about, scared to waste my money trying it was hoping someone here would have input on the topic.

[jdbower]

It depends on the wheel size. All of the wheels should be identical, otherwise it will screw up ETS/ESP (read: no staggered rims on AWD vehicles).

According to Luke @ TireRack the following are valid wheel sizes for the ML (18"+ rims):

285/50-18T 29.2
285/55-18 30.3
285/45-19 29.1
265/50-20 30.4
295/40-20 29.2
295/45-20 30.4

http://benzworld.org/forums/forums/t...fid=39#M723253

I'm not sure about the theory that one should plus size the brakes when they plus size the rims. Granted bigger rims are often heavier and move the mass out to the edge (more angular momentum), but I would imagine that most manufacturers compensate for this. The trick to brakes is that if you can get ABS to kick in rotor size isn't the limiting factor - road traction is. With my 20" rims on it's a lot harder to do thanks to the 295mm width but I still can. It's also important to note that the ML55 has the same brakes as the ML 430/500 and runs 285/55-18 stock.

I also haven't had much of a problem with the wheels tracking the groove in the road, but maybe I'm just used to it or the ML55 beefier sway bars help.

[candrews]

Forgive my ignorance, I'm clueless when it comes to these wheel sizes.

So which of these provides the most sidewall on a 20" wheel?

265/50-20 30.4
295/40-20 29.2
295/45-20 30.4

[jdbower]

candrews - 7/5/2005 5:03 PM

Forgive my ignorance, I'm clueless when it comes to these wheel sizes.

So which of these provides the most sidewall on a 20" wheel?

265/50-20 30.4
295/40-20 29.2
295/45-20 30.4

The last number is the outer diameter, so it seems as though the 265/50 and 295/45 are about the same. First number is the width, second is the aspect ratio, third is rim diameter, fourth is outer diameter (calculated).

This may help:
http://www.buicks.net/shop/reference/tires.html

[MADSLEG]

Installed it today and very UPSET
Its look UGLYYYYYYYYYYYYYYY[V]
will sell them on EBAY
[:(!]

[jdbower]

Sorry, but I have to agree. [:(]

May look better with bigger sidewalls, but I was never a big fan of chrome.


http://www.benzworld.org/gallery/sho...jdbower%20HREs

[MADSLEG]

Even before it looks better