0700700

hello guys i got a question for you as this is slightly puzzling.

On my CLS55 i have the typical 19inch standard AMG config. 255/35 front and 285/30 rear. As we had quite a bit of snow here, i had to get some winter tyres and as no-one had any in stock i was forced to purchase four alloys together with winter tyres


anyways the 18inch alloys are also standard OEM AMG ones (stock picture below)



and they all come with 245/45 r18 tyres. As winter is now pretty much over here, i thought i would give those alloys a try with summer tyres and would purchase a set of 4. BUT i saw an E55 AMG yesterday with the same alloys, and out of interest peeked to see what his tyres were (he had summer ones on), and for some reason his front ones are 245/45 but his rears are 265/40

What does this mean? have i been basically been sold two sets of front alloys only? Ive had the alloys on for two monts, if sizing is wrong can anything happen with my car? i dont think my dealer would be that stupid as they ordered them for me


Or can the alloy also accept a bigger tyre ? if so , how does this work, isnt the 265 tyre "wider" then the 245 tyre?

tnx

Zod

i have 255 front and 285 rear on those with Pzero tires its fine
infact i am going to try bigger!

From my understanding both the 18 & 19rims have same 9.5 diameter width cant remember fronts

0700700

my wheels are the same size all around, hence i imagine my alloys will also be identical... are you sure yours are? do AMG only make the 18inch OEM rims in one size?


anyways i dont understand. How is it possible to put larger tyres on the same Rimms ... i mean isnt a 285 tyre bigger then a 245 tyre...

0700700

oh come on.... somebody

0700700

another bump

Zod

***deleted double post***
sorry

Zod

yes the fronts are different the the rears
i got my car from germany and thats the setup it came with 255 front 285 rear.
Go to AMG performance studio site n you will see that front n rears are not the same size.

i do not under stand how yours are all the same size

juicee63

You need to tell us rim width a 9.5 inch rim could accept 265 245 235 255 even 275.

The cls 55 has a staggered set up but you could do all 4 tires and rims the same. MB staggers because it improves handling to have a wider shorter rear tire. Your set up is fine ,check to see what the rim width is it is likely staggered with the rear being slightly wider 18x8.5 fronts and 18x9-9.5 rears?

Either way you can go with 245/45/18 fronts and 255 or 265/40 rears. The 18" wheels will improve your performance a bit. You can check fitment issues at

www.tirerack.com

raymond g-

you were sold (4) E55 type split spoked front wheels. the E55 AMGs have been
running staggared for years, utilizing 9.5" in the rear. use of same all around is
no big deal and eases use of cables/chains if needed.

http://www.alloywheelsdirect.net/inf.../mercedes-benz

0700700

Now thats what im talking about ! thanks so much guys, much appreciated. I must tell you id be pretty F*()ing pissed if my dealer made a fool out of me and sold me what are basically 2 sets of front rims and tyres...

But there should be no problem driving like that? especially for the airmatic (thats my main concern) ?...

how do i check the rim width? where on the rim is it and what kind of thing should i be looking for (do bear in mind that i am in Europe, maybe the markings will be different )

juicee63

Can you take a pic of your rim and tire , I could tell you from the pic sounds like you may have. It likely matters not as long as the tire and rim are flush they fit they should snug about 1/2 inch under your fender. If you wanna keep the set up for summer go 245/45/18 in front and 265/40/18 in back, or 275/40/18 if you have at least a 9" rear.

0700700

hey mate, ill have to get back to you with pics, as the car is in for a bonnet respray (some **** keyed it!) , problem is i have already bought 6 tyres for 245/45/zr18... I decided to buy them all cause they are Michelin Pilot Sport 2s and they rarely come to bulgaria!

well i suppose i should be ok , cause ive driven for 4000miles with my winter tyres so far! The winter and summer tyres are the same though (given the same size), right? i mean if the summer tires are the same size, then they would fit the rims in the same way as the winter ones??? god that sounds like a dumb question but i gotta make sure

juicee63

Yes you are fine.. enjoy the set up, there is alot of things you can do on the model 245 all the way round is fine , twisty roads more difficult than the straights but for everyday driving sounds like a nice set up. I was thinking of doing 265/30/19 all around on my car, but now Im gonna do 305/30/19 rears and 275/35/19 fronts !!! For spirited track driving

jpohl402

I am very confused as well. Picking up an E55 soon and am obsessive about factory specs including tires. Noticed the tires are not factory continentals and instead a winter tire. The rear tires are supposed to be wider, but these winter tires are all the same width- which bugs me. Which exact model continental do these benzes run from the factory? And on tirerack, it lists that an 05 could come with either 18 in tires or 19 in tires. I'm in the US and the E55s I'm familiar with have 18in amg split spoke wheels. What the hell is the deal? Any help would be appreciated!!

Zod

i have witnessed the effect 305 19 rears have done to a cls 55...it was amazing how it transformed dig performance.

Frankly i do not know how you will find any traction with 265 and conti tires

and again like i have said go to
http://www.mercedes-amg.com/index2.h...en/lounge/news

follow this route (if link does not work):

1. show room
2. models
3. coupes
4. cls63
5. tech specs
6. suspension

scroll down
and you will clearly see

wheels
front 8.5 J x18 ET 25
rear 9.5 J x18 ET 28

Tires
front 255/40 R18
rear 285/35 R18

why do they down grade us model sizes?

0700700

Can you be a bit more specific... What size tyre is it ? 305/25 or other? and that is mounted on a standard OEM 19inch AMG rimm (the one that normally takes 285/35?)... also what about the fronts? do they keep the 255/35 ones?

juicee63

You need the 10" rear to accomodate the 305/30/19 a better set up is a 295/30/19 rear and a 255/35/19 front or 265/35/19 front ..305 fits but it bulges slightly.

The CLS can fit bigger tires than the E class, you could even go 275/35/19 on the fronts and 295 or 285 rears. The most important aspect is weight how much weight can the tires support. The smaller the tire generally the less weight they can support

Zod

Tire was used on a friends car.
He has OEM 19's, which believe share same width front and back as the OEM 18.
Dealer said his nitto invo 305 19 tires would not fit on his rears. He went to his friends shop on got them on.

Me and him later raced that day...from a dig (stand still) he would not suffer from ESP killing his launches and pulled 2 cars on me as i had to fight with esp
He kept his 255 fronts
Personally I am going to try 295 rears ,either toyo T1r's or Michelin cup/PS2

juicee63

You gotta try the new TOYO R888, but I also like the T1r's and they are proven. The cup is great, the ps2 is also great. I agree with youthe 305's can fit they fit my 19*10 rear. I think a 285-295 is PLENTY

ScottCLS55

I got some 315 30 DR's today to go on SL 18" rears for my CLS on drag days.

They are gonna look a little like donuts but I bet they will hook.

juicee63

Wow , please let me know how it works!

0700700

Juice, my normal summer config is the 255 + 285 standard 19inch combo that came with my car. Problem is that for some reason NO ONE stocks 285/30 in bulgaria. There are plenty of 245s/265s/295s/305s but not my size

SO , once ive burned through my sets of 245s i might consider putting on a 295/30/zr19 on the rears. My only concern, and hence why i wanted to find out from Zod, is that my dealer says that putting anything bigger than 285s on the rear wheels will f**k up the airmatic suspension

ScottCLS55

UH,, I guess there are a lot of airmatics messing up then.

most people with 22s or even 20's have larger rear sizes..

Now my 315 may be pushing the limit for everyday driving but for a day at the strip I don't see an issue.. Yet.

The only way it would affect the suspension is if the tire rubbed against the shock or air line going to the shock...

Zod

Am sorry but you go to tracks with prep and complain when your numbers are bad if the prep was crap...

My experiance is every day driving on normal roads where grip is hard to find in a 55 from low speeds with out trigering ESP and boging our start

I want you to race a few 55k with stock rears from a dig at a traffic light (better yet modded ones) and see how much a difference it makes (short distance light to light)

my cuz's E500 can jump me from a stand still till i hook up and if the distance is short well

ScottCLS55

The tires fit perfect! not rubbing at all.

Pics coming..