Have they fitted the wrong ones!!!

[muzbaz]

Long story cut short,,,,My garage said he gets triple A rated tyres at a good price, Hmmm, So, on my W/S203 I had 245's on the rear and 225's on the front, the garage called and said the tyre people recommended standadizing the tyres to 235's (235/45/17 XL) all round which works out a little cheaper and not detromental to the handling.
I have looked and it seems to me that the fronts are a little too close to body work and struts, although not touching, but very close on full lock.

Can anyone tell me if the 235's are wrong, or a problem safety wise and if they are am I able to return the car and ask/demand for them to be changed? Listings i've found don't suggest 235's front or rear :-/

Nothing is ever simple just lately

 

[renault12ts]

What were the profiles of the original tyres?

Edit: They're too big. The original fronts were 225/45, so these 235/45 are 4.5mm too high...and closer to the arches etc. The tyre people would NEVER have recommended standardizing the sizes. Get them changed to what they should be...they got a deal for themselves rather than you.

 

[carat 3.6]

I dont think that you will have a problem, but you may need to tell your insurance company.

 

[markjay]

What variant / what year?

My W203 (2006) owner manual says:

Front: 225/45 R17 91W
Rear: 245/40 R17 91W

Which, by the sound of it, is what you originally has fitted?

Alternatively, the manual says you can fit 225/45 R17 91W all around.

So:
(a) 235 is not a size recognised by my MB owner manual for anywhere on the car (rear or front)
(b) The maximum width for the front tyres is 225 - and this is true all the way up to the top-of-the-range C55 AMG.

And, if you changed the tyre size you will need to notify your insurer.

Note however that the above is for MY 2006 - not sure what year is you car though.

 

[whitenemesis]

Front rims are 7.5" and the rears 8.5" by fitting the 235 all round you will upset the handling and quite probably your insurance company. Get the correct sizes fitted.

 

[markjay]

Front rims are 7.5" and the rears 8.5" by fitting the 235 all round you will upset the handling and quite probably your insurance company. Get the correct sizes fitted.

Correct, I forgot to mention this...

225 = 7 1/2 J

245 = 8 1/2 J

 

[muzbaz]

the difference between 225/45 and 235/45 is in the width not the height, so on full lock they would certainly be closer to body work, the increase is not to the height/diametre, I wish I'd seen how close the original fronts were, but then I did not expect to have seen/known this :-/

 

[Will]

235/45s are the wrong size. Don't listen to their nonsense and get the correct sizes fitted

 

[renault12ts]

the difference between 225/45 and 235/45 is in the width not the height, so on full lock they would certainly be closer to body work, the increase is not to the height/diametre, I wish I'd seen how close the original fronts were, but then I did not expect to have seen/known this :-/

The profile of a tyre is a percentage of the width. So, as the width increases, so does the height. Which is why I said the 235/45 is 4.5mm higher than the 225/45. The tyre wall of the 225/45 is 45% of 225 which is 101.25mm, the 235/45 is 105.75. The rear tyre, 245/40 has a height of 40% of 245, which is 102mm.

 

[grober]

Triple A rated tyres?? What does that mean? Get the manufacturer sizes recommended in your handbook- nothing more or less. As has been said -keeps the insurance guys happy. If the garage complains tell them it invalidates your insurance policy. You might also want check the date of manufacture of the tyre.-- they shouldn't be more than 6 -9 months old from their date of manufacture. How to Read Dating Codes on New Tires | eHow.com

 

[whitenemesis]

Check the comparison here

Tyre Calculator - Alloy Wheels - Specialist supplier of alloy wheels and tyres packages, Fast Delivery, Buy Online.

 

[Will]

The profile of a tyre is a percentage of the width. So, as the width increases, so does the height. Which is why I said the 235/45 is 4.5mm higher than 225/45s.

Correct.

235/45/17 is too big - rolling radius/diameter of the tyre is higher.

 

[muzbaz]

Your information is exact and mine is a 2005 so our spec is the same and as you say there is no mention of 235's and of course if it is changed from standard sizes notification to the insurance company is required,,, this is so frustrating and of course a sharp eye'd MOT tester could fail the car for not haveing OM fitment

 

[renault12ts]

Your information is exact and mine is a 2005 so our spec is the same and as you say there is no mention of 235's and of course if it is changed from standard sizes notification to the insurance company is required,,, this is so frustrating and of course a sharp eye'd MOT tester could fail the car for not haveing OM fitment

Did you read the bit in my post about the height of the tyre? I went to some trouble in that lesson.

 

[muzbaz]

Did you read the bit in my post about the height of the tyre? I went to some trouble in that lesson.

Hi,, yes I did thank you, very informative, my knowledge was that it only increased the width not the rolling circumference too, so I appreciate your very clear quote

 

[muzbaz]

Triple A rated tyres?? What does that mean? Get the manufacturer sizes recommended in your handbook- nothing more or less. As has been said -keeps the insurance guys happy. If the garage complains tell them it invalidates your insurance policy. You might also want check the date of manufacture of the tyre.-- they shouldn't be more than 6 -9 months old from their date of manufacture. How to Read Dating Codes on New Tires | eHow.com

Hi, he said that triple A rated meant tyres that are of a same spec as a continental, pirelli etc, but by a different brand :-/

 

[renault12ts]

Hi, he said that triple A rated meant tyres that are of a same spec as a continental, pirelli etc, but by a different brand :-/

I think he saw you coming...utter tripe.

 

[grober]

Hi, he said that triple A rated meant tyres that are of a same spec as a continental, pirelli etc, but by a different brand :-/

Fair enough. I have never heard that expression used for tyres. what make did they supply?
ps I would seriously think of changing your garage after this.

 

[ringway]

Fair enough. I have never heard that expression used for tyres. what make did they supply?

They are a recognised brand from Scouse Tyres Ltd. A-A-A.


Some say they never skid, but "Dey do dow dont dey".

 

[Igurisu]

You may also want to check your cruise control is still functioning. Elsewhere on the forum there is a thread where the cruise control on a members car is not working above 50mph because of the difference in rolling circumrence between front and rear.

To be honest you need to take the car back for the corrcet tyres to be fitted.