Tyre sizes

Author
Discussion

Katie Garner

Original Poster:

27 posts

3 months

Saturday 9th February
quotequote all
Hi looking for some advice I have a e250 and just had to get 4 new tyres.
Originally the front were 235 40 18 and rear
255 35 18
They have replaced the fronts with 225 40 18, rears are same.
They say it is fine, what are your thoughts please? Will it have any adverse effects?

HustleRussell

15,682 posts

98 months

Saturday 9th February
quotequote all
That’s weird if you didn’t tell them to do it. Are they Mercedes recommended sizes? Doubt it. Have them put the correct size on.

Edited by HustleRussell on Saturday 9th February 14:36

Katie Garner

Original Poster:

27 posts

3 months

Saturday 9th February
quotequote all
No they aren’t the recommended sizes from what I can see online, I’m guessing that they didn’t have those in stock or something.
I’m not sure when I can get back there so just interested in if it will cause any problems or issues?

280E

1,213 posts

45 months

Saturday 9th February
quotequote all
Who are 'they'?

Drive Blind

2,930 posts

115 months

Saturday 9th February
quotequote all
stunning that a tyre place think this is acceptable
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SlimJim16v

2,014 posts

81 months

Saturday 9th February
quotequote all
Yes, too small. Will make the ride less comfortable and the wheel more susceptible to damage.

T5R+

1,040 posts

147 months

Saturday 9th February
quotequote all
Suspect that you have 8J front and 8.5J rear rims.

Sheer bone idle laziness on the tyre suppliers part.

Overall you have lost approx 4mm height difference (235 vs 225 x 40 x 18)

Speedo change will be marginal at 70mph (less than 1mph)

On a sidenote - think that your rears should have been 265/35 x 18.


thebraketester

6,920 posts

76 months

Saturday 9th February
quotequote all
SlimJim16v said:
Yes, too small. Will make the ride less comfortable and the wheel more susceptible to damage.
Between the two the difference would be imperceivable.

I imagine they probably stuck 225s on as they are a very common size and they didn’t have the 235 in.

225s are likely to be cheaper too although I have not checked.

Katie Garner

Original Poster:

27 posts

3 months

Saturday 9th February
quotequote all
T5R+ said:
Suspect that you have 8J front and 8.5J rear rims.

Sheer bone idle laziness on the tyre suppliers part.

Overall you have lost approx 4mm height difference (235 vs 225 x 40 x 18)

Speedo change will be marginal at 70mph (less than 1mph)

On a sidenote - think that your rears should have been 265/35 x 18.
I did check out suggested sizes online from the Reg and the rears do say 255/35
Just the front says 235/40 and they have put 225 on.
So annoying as it’s a pain getting back.

Oilchange

5,295 posts

198 months

Saturday 9th February
quotequote all
SlimJim16v said:
Yes, too small. Will make the ride less comfortable and the wheel more susceptible to damage.
I very much doubt either of those assertions are true bearing in mind the tiny reduction in width.

Katie Garner

Original Poster:

27 posts

3 months

Saturday 9th February
quotequote all
280E said:
Who are 'they'?
Place called F1 in Romford

Katie Garner

Original Poster:

27 posts

3 months

Saturday 9th February
quotequote all
thebraketester said:
SlimJim16v said:
Yes, too small. Will make the ride less comfortable and the wheel more susceptible to damage.
Between the two the difference would be imperceivable.

I imagine they probably stuck 225s on as they are a very common size and they didn’t have the 235 in.

225s are likely to be cheaper too although I have not checked.
Yes I would think they have done it as they didn’t have the others, plus I’m female so perhaps they thought I wouldn’t notice or check 😡

Andeh1

5,131 posts

144 months

Saturday 9th February
quotequote all
Poor form from them, it's a small difference but manufacturers set default sizes for a reason.

If local to me I would be ringing & asking them to swap tyres to correct ones out of principle.

Did you pay via credit card? You could probably get some traction with them & explain they fitted wrong tyre size.... Especially if they play hard ball.

Katie Garner

Original Poster:

27 posts

3 months

Saturday 9th February
quotequote all
It’s ok they’re not being awkward about it they said they will change just in their opinion it’s ok anyway basically.
I was just interested to hear opinions on if it’s an issue really.
Appreciate all the response, thanks very much!

LarsG

730 posts

13 months

Saturday 9th February
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I used the Blackcircle website to order four new tyres for my wife's Focus using the registration number. It recommends 215/55R16. However the original tyres fitted to the car are 205/55R16. Big price diffence too. Easy to get it wrong.

Pica-Pica

4,325 posts

22 months

Saturday 9th February
quotequote all
OK, I’ll say it. Insurance invalidated? Because - Non-standard tyres?

milu

1,456 posts

204 months

Saturday 9th February
quotequote all
Oilchange said:
I very much doubt either of those assertions are true bearing in mind the tiny reduction in width.
The width isn't the issue. It's the 4mm reduction in sidewalk depth. Still,maybe most drivers wouldn't notice.

thebraketester

6,920 posts

76 months

Saturday 9th February
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No one would notice.

deltashad

6,628 posts

135 months

Saturday 9th February
quotequote all
It may not be noticeable to you or others but why ? Why are you posting this? Did you save a few quid? Smaller tyres will affect the factory set up and will look crap. At least to car guys.
Don't be silly. Just buy the proper tyres for the back and keep the other two for when you don't get your wheels aligned properly

Mr Tidy

7,366 posts

65 months

Sunday 10th February
quotequote all
Whatever has been posted on here, you really need to identify what size your wheels are before you can determine which tyre size should have been fitted!