Bigger wheels e350 cabriolet 2011

[Co121]

I’ve just recently changed all 4 alloys and tyres on my e350 2011 cabriolet due to a cracked alloy. My problem now is that the drive isn’t smooth as before now the drive sounds loud and rumbles with the new tyres on the vehicle. The car now pulls slightly and the steering feels a lot more heavier. All 4 tyres have decent thread. My recent tyres were rear 255/35/18 front 235/40/18 and what I have put on the car now rear 265/35/18 front 245/40/18 can anyone tell me why am I experiencing this issue please tia

 

[Bigdrew]

Not to sure but probably to do with different tyre width

 

[toteimerced]

Wouldn’t have thought 10mm will make that much difference, maybe it’s the tread pattern, rather than the size.

 

[MikeInWimbledon]

..

 

[MikeInWimbledon]

What make of tyre have you put on there and how old are the tyres?

The four number date stamp is on the tyre wall: week number year number (WWYY)

 

[W1ghty]

Are the new alloys aftermarket ones ?

 

[fabes]

Tyre type (run flats?)
Tyres season (AS / Summers?)
Tyre brand and their own noise assessment rating?
Tracking and Alignment?

They shouldn't be rubbing with only 10mm more (albeit your Speedo will be ever so slightly out), but check

Any other non OEM elements (lowered, aftermarket shocks etc)?

 

[Co121]

Are the new alloys aftermarket ones ?

Ori

Are

Are the new alloys aftermarket ones ?

Original amg alloys

 

[OneForTheRoad]

Offsets and J numbers of both sets ... ?

 

[DSM10000]

So you haven't changed to larger wheels, you have, for some reason fitted slightly wider tyres?

What is the sidewall rating for the new tyres compared to the previous ones and what brand are the new tyres?

 

[toteimerced]

The saloon and estate, run 10mm wider tyres than the coupe and convertible, for some strange reason and the wheels are half inch wider too.

 

[Spider10]

I can guarantee that they are cheap over inflated tyre's the 10mm wider will make no difference at all

 

[MikeInWimbledon]

If you've re-used older tyres, even with plenty of tread, you may find that they can be stiffer and "problematic." This can be the result of lack of use, or sun light exposure.

I've bought low mileage decade old cars running on their original factory tyres, with plenty of tread left, which have still run badly because of lack of use. Simply fitting new tyres, with tracking and balancing, has transformed their ride quality.

(And +1 re Run Flats: if you've switched to run flats, there's a compromise that's involved, as any BMW owner will explain)

Another possible cause would be if you've switched from Winters or Cross Climate to "Summer" tyres.

 

[ALFAitalia]

The saloon and estate, run 10mm wider tyres than the coupe and convertible, for some strange reason and the wheels are half inch wider too.

Because the cab and the coupe are not really a 212 based E Class...but a 204 saloon dressed dressed in 2 door clothing designed to look like one... so the running gear is 204 based too

 

[markjay]

Because the cab and the coupe are not really a 212 based E Class...but a 204 saloon dressed dressed in 2 door clothing designed to look like one... so the running gear is 204 based too

As above, you need to check if the wheels and tyres are the correct size for a W204, not for a W212.

 

[toteimerced]

Because the cab and the coupe are not really a 212 based E Class...but a 204 saloon dressed dressed in 2 door clothing designed to look like one... so the running gear is 204 based too

Yes I realised that, but why have different size wheels, when they both fit, it seems like unnecessary production costs.

 

[Leng]

Your problem is the front tyre width 245 will give you the tramlining, pulling feeling and the rear tyre 265 is what is giving you the heavy steering feel. Revert back to factory tyre size and your issues will disappear.
I know this as I have an 2011 E350 which suffered the same problem.

 

[ALFAitalia]

That is the stock width tyres on my 350 CDI saloon (245,265)......dont have those issues on that..

 

[Leng]

That is the stock width tyres on my 350 CDI saloon (245,265)......dont have those issues on that..

Different chassis to OP?
Saloon is 212
Coupe and cab is 204

 

[OneForTheRoad]

Different chassis to OP?
Saloon is 212
Coupe and cab is 204

He knows this , post 14 . Must be having a bad day ??