Offset question

[Howard]

Hi guys ...

If i have a wheel that is ET 54 and i need to bring it down to ET49 , how do i do that ?

I know that if it is 49 and i need to bring it to 54 , i can use a 5mm spacer , but how do you bring it down ?

Thanks

 

[renault12ts]

Get it machined. Can't think how else.

 

[Howard]

Can you do that ? Who would do that ? How much would that cost ?

Ok , another option ...

It is only 5mm difference , would it foul the arches ?

Wheel is a 7.5 x 18 , going on a w168 A class , ideal wheel size is ET54 front and ET49 rear ... however , all four wheels are ET54 .... i realise it will widen the track , and i don't think that rubbing on the suspension would be an issue because the wheels are sitting out 5mm further , rather then 5mm in further ...

 

[gunning]

take it to a cylinder head specialist... they can skim it

 

[wheels-inmotion]

Agreed, the wheels needs to be milled.

 

[aka$h]

You want to go from et54 to et49? Add a 5mm spacer. Adding a spacer will bring the offset figure down.
The issue is when you want to increase the offset figure, then you have to machine the hub.

 

[T7RY B]

Agree with Aka$h it works spacer to reduce offset

 

[npuk]

Higher the ET / offset the further inside the wheel arch the alloy will sit. Lower the ET / offset the further out the alloy will sit inside the wheel arch. A spacer moves the wheel further out so reduces the ET / offset.

 

[gunning]

Yup npuk is correct

 

[C240Sport97]

5mm will barely be noticeable .. just put the wheel on

 

[T7RY B]

Try this link for offset info. http://www.gtsparkplugs.com/WheelOffsetCalc.html

 

[Howard]

They are 18's on a w168 A class guys , it's gonna be tight under the wheelarch !!

So , i had it completely wrong , putting a spacer in DROPS the offset ? !!

Thats all good then.

Thanks

P.S. next question , they should have 225/35/18's on them , but they currently have 225/40/18's on them , is this going to interfere with the ABS / ESP or anything like that ( it hasn't got cruise )

 

[Chris Murray]

where are these wheels being advertised? it would seem strange to fit 2254018 tyres to whels of that offset. I would suggest 22254018 is too large for the 168. 2153518 or 2253518 would be a better choice..

 

[flango]

Spacers decrease offset, Milling the wheel increases offset, you can usually go 5mm - 7mm either way from standard without causing any negative handling or performance issues. Anything beyond this and you are asking for major suspension and handling issues.

 

[Howard]

Chris you have PM

Thanks everyone for explaining offset

 

[Chris Murray]

Brabus Mono V 1pc
BRA 51272854 front 18x7.25ET54 to use 2253518
BRA 51272849 rear 18x7.27ET49 to use 2253518
he said they were originally purchased for a 168 then transpanted onto a 170, which explains the 2254018 currently fitted.
My suggestion: refurbish at rimfurbish.co.uk
Sell tyres on ebay
Purchasae 2253518 and 5mm rear adapter packs if not already included

 

[Howard]

Hmmmm ...... getting expensive now ....

Is there any way i could run around on the 40 profiles for a bit , until funds had built up enough to replace all the tyres ?

Not ideal i know .

 

[npuk]

ET54 front and ET49 rear are correct for the W168 so why do you want to use spacers?

 

[BlackC55]

Just be careful. 18's on an A-class make it handle and ride terribly.

 

[Howard]

ET54 front and ET49 rear are correct for the W168 so why do you want to use spacers?

Because the wheels i have been offered are all ET54 , so i need to drop the rear ones to 49