[fatboy_coach]

Daft question I'm sure, but my 330D has 225/45/18s front and rear.

The MOT noted that the rears are close to the limit so it's time for a change and as the 225s look quite stretched, is it a straight fit to go to 255/40/18 (as per the door sticker and many websites based on my reg)?

TIA

Ian

[robbiep]

Depends on the width of the rear wheels.

If you take the wheel off, it'll have stamped on the inside (something like) 18" x 8J (possibly 8.5J).

If 8J, then 255 is really a bit too big to be safe. If it's 8.5 then you should be fine

[Hooded]

My 330d has 225/45/18 fronts (8J) and 255/40/18 Rear (8.5J) on standard M Sport alloys.

I will be putting 245/40/18 on the rear when the tyres need replacing though, simply because they’re cheaper and fit the 8.5J even better.

[doncarlyon]

Potentially a previous owner has had 225's fitted on the rear to save a few quid.

[GEP77]

Although some models of 330d had 225s all around. Any SE, Luxury or Modern on 18s were in this state as standard.

[fatboy_coach]

Originally Posted by GEP77

Although some models of 330d had 225s all around. Any SE, Luxury or Modern on 18s were in this state as standard.

Mine is a Lux, so that might explain it. Still hoping the rear wheel is wide enough for 255.

[HighlandPete]

Originally Posted by fatboy_coach

Mine is a Lux, so that might explain it. Still hoping the rear wheel is wide enough for 255.

You must have an 8.5J rim for a 255/40 R18 tyre. Fitting on an 8J rim, you'll be outside ETRTO and DIN standards.

[Hooded]

Originally Posted by HighlandPete

You must have an 8.5J rim for a 255/40 R18 tyre. Fitting on an 8J rim, you'll be outside ETRTO and DIN standards.

This^
Although you could still fit a 245/40/18 on the rear safely with an 8J rim. These are generally cheaper than the 255 as well.