Over sizes tires
Thread Starter
Member
Joined: Mar 2015
Posts: 127
Likes: 1
From: Sacramento, ca Area
2006 CL600
Over sizes tires
Hey fellow w215,
well it seems what my tire guy said is true, using a wider lower profile tire then stock on these cars will cause TC issues and transmission shifting because of it. I thought whatever it can't be that bad plus they look so cool on there. Uummm, let me tell you they have been nothing but problems, I thought the wider tire would give me better grip which I badly need but this car breaks lose so easily. It has cause the TC, ESP and ABS to act up and be way overly touchy. Now it seems it is causing transmission shirting issues because of it I punch it and TC triggers just a lil and the transmission doesn't want to kick down like it used to. It usually would kick down 2 gears but now it only wants to kick down 1 gear.
Sooo has anyone else done this and have this problem or similar issue(s).
Stock rear is 265/40/18.. I put on 275/35/18.
I did the adaptive driving transmission reset and it didn't help just in case someone suggest to do it.
Obviously I will be going back to stock size this weekend.
well it seems what my tire guy said is true, using a wider lower profile tire then stock on these cars will cause TC issues and transmission shifting because of it. I thought whatever it can't be that bad plus they look so cool on there. Uummm, let me tell you they have been nothing but problems, I thought the wider tire would give me better grip which I badly need but this car breaks lose so easily. It has cause the TC, ESP and ABS to act up and be way overly touchy. Now it seems it is causing transmission shirting issues because of it I punch it and TC triggers just a lil and the transmission doesn't want to kick down like it used to. It usually would kick down 2 gears but now it only wants to kick down 1 gear.
Sooo has anyone else done this and have this problem or similar issue(s).
Stock rear is 265/40/18.. I put on 275/35/18.
I did the adaptive driving transmission reset and it didn't help just in case someone suggest to do it.
Obviously I will be going back to stock size this weekend.
Senior Member
Joined: Feb 2005
Posts: 254
Likes: 17
From: America
CL600 2003
Your problem is probably different circumference between front and rear, if I recall you must keep the difference at about 3%.
The logic here is that if the difference is to much the car thinks the rears are slipping
here is a calculator: http://www.discounttire.com/dtcs/infoTireMath.do
Compare your front and rear circumference and see how much they differ
The logic here is that if the difference is to much the car thinks the rears are slipping
here is a calculator: http://www.discounttire.com/dtcs/infoTireMath.do
Compare your front and rear circumference and see how much they differ
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,077
Likes: 80
From: Anchorage
05 CL65
Slonar21 are is right. Your tires sizes are too different from front to rear. You can either go to a taller, correct circumference rear, or keep your new rears and go with a shorter front tire.
MBWorld Fanatic!
Joined: Jan 2008
Posts: 6,150
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Mercedes
Yes as everyone said above , you can certainly use larger tires, but the circumference on both front and rear need to be the same
In fact the sizes you should be using on an 18 inch wheel are 245/45/18 front and 275/40/18 in the rear. This is even larger that what you currently have and it's the factory Amg size so it will work fine . I have them on my CL
In fact the sizes you should be using on an 18 inch wheel are 245/45/18 front and 275/40/18 in the rear. This is even larger that what you currently have and it's the factory Amg size so it will work fine . I have them on my CL
Last edited by tusabes; May 17, 2016 at 04:43 PM.
Thread Starter
Member
Joined: Mar 2015
Posts: 127
Likes: 1
From: Sacramento, ca Area
2006 CL600
Ahh, I see now after doing some reading on it and using that tire calculator, thanks slonar21, I am definitely way to low profile in the back.
With the front being 245/45/18 and rear being 275/35/18 it is giving me a 3.46% circumference difference and that is the issue. It can only be a max of 3% preferably less or you will have problems.
In a weird way I am glad cause I thought I was having some big problems but now it all makes sense and because of the difference it is throwing the monitoring systems and electronics off the TC, ESP, BAS, and the transmission down shifting because of it adapting to the to small profile.
Thanks guys much appreciated.
With the front being 245/45/18 and rear being 275/35/18 it is giving me a 3.46% circumference difference and that is the issue. It can only be a max of 3% preferably less or you will have problems.
In a weird way I am glad cause I thought I was having some big problems but now it all makes sense and because of the difference it is throwing the monitoring systems and electronics off the TC, ESP, BAS, and the transmission down shifting because of it adapting to the to small profile.
Thanks guys much appreciated.
Junior Member
Joined: Jul 2016
Posts: 20
Likes: 2
From: Long Island NY
2003 CL500
Dredging this thread from the dead.
Glad I found it because I am looking for tires for my 03 CL500. It has the AMG package (chrome 18s) and currently has Bridgestone Potenzas I hate. The ride is super rough. These things feel like riding on hexagons when cold. 265/40/18 & 245/45/18.
Someone on CL has Michelin Pilot Sports off a 500SL with only 8k on them for $400. The issue is they are 285/35 ZR18 & 255/40 ZR18. These are rated much higher for road noise and ride quality on TireRack.
The rims are 9.5" and 9" so I think they can handle the tires, I am at 0.56 (closer than what is on now) in size difference but I am wondering iF the 35s in the back will make the ride worse although its a better tire.
Glad I found it because I am looking for tires for my 03 CL500. It has the AMG package (chrome 18s) and currently has Bridgestone Potenzas I hate. The ride is super rough. These things feel like riding on hexagons when cold. 265/40/18 & 245/45/18.
Someone on CL has Michelin Pilot Sports off a 500SL with only 8k on them for $400. The issue is they are 285/35 ZR18 & 255/40 ZR18. These are rated much higher for road noise and ride quality on TireRack.
The rims are 9.5" and 9" so I think they can handle the tires, I am at 0.56 (closer than what is on now) in size difference but I am wondering iF the 35s in the back will make the ride worse although its a better tire.
Last edited by richcl500; Aug 1, 2016 at 08:43 AM.
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Super Member
Joined: May 2016
Posts: 516
Likes: 26
From: California
2018 C300
I've got Continental all seasons on mine, and they seem to be pretty solid of a tire. The Pilot Super Sports I had on my Dodge were good, but didn't provide as much off the line traction as I'd have liked for a summer tire(the CL500 probably wouldn't have that issue, though.) The Continental DWS's on the Audi also are noisy when cold and can be sketchy in the rain, but provide excellent performance otherwise. The Pirelli's on the Dodge now do well in all scenarios so far, rain or shine, hot or cold. Being a naturally louder car, I can only say that they aren't noticeably loud.
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,077
Likes: 80
From: Anchorage
05 CL65
I replaced my Continental DW's tires (not DWS's) which were hard as rocks with terrible traction and horribly noisy with BFGoodrich g-Force COMP-2 A/S's. The BFG's are awesome by comparison. Way better ride, way better traction, and No noise. I'll buy them again even if they last less than the 12,000 miles I got out of the DW's.
Junior Member
Joined: Jul 2016
Posts: 20
Likes: 2
From: Long Island NY
2003 CL500
I replaced my Continental DW's tires (not DWS's) which were hard as rocks with terrible traction and horribly noisy with BFGoodrich g-Force COMP-2 A/S's. The BFG's are awesome by comparison. Way better ride, way better traction, and No noise. I'll buy them again even if they last less than the 12,000 miles I got out of the DW's.
Rides SOOO much better! Thanks for the recommendation!
Junior Member
Joined: Jul 2016
Posts: 20
Likes: 2
From: Long Island NY
2003 CL500
Did the tire sizes with a tire size calculator. I am closer in matched diameter than I even was before. While I don't drive the car hard, I do like my turns and thought a fraction of lost height wouldn't hurt the ride. And... it has not.
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,077
Likes: 80
From: Anchorage
05 CL65
The only thing I have them to directly compare to are the DW's, and like I said before, the BFG's are a HUGE improvement over the Continentals.
I drove a 2015 Stingray with Michelin PSS's and I really think the BFG's have better launch traction. Once the PSS's start to spin they just cant grab again until you let them. The 'vette only had 460HP, so slow compared to my CL, LOL.
