[msportbluey]

can anyone help me by giving me the correct tyre pressure for my 2008 bmw 318i m sport which has bridgestone run flats. front 225/45/r17 and rear 255/40/r17. many thanks

[Dave_3]

It should be on a label on the side of your door pillar.

For various tryes.

D.

[msportbluey]

thanks for the reply but i can`t see my particular size tyres on the label so i don`t know if they are standard fit!

[Dave_3]

In that case just look at the ranges of tyre pressures for the ranges of tyres. I would imagine they don't fluctuate too much.

Probably the biggest factor will be load rating "W" or "Y".

Just choose a sensible median near your tyre size, taking the load factor into consideration. You won't be far out.

D.

[msportbluey]

thanks for your help

[Dave_3]

Edit : meant speed ratings !

On my setup the difference in pressures are quite marked when changing from W to Y.

D.

[doughboy]

Originally Posted by msportbluey

thanks for the reply but i can`t see my particular size tyres on the label so i don`t know if they are standard fit!

The sizes you mention are standard fit 17" M sport sizes.

They WILL be on the rating plate.

[msportbluey]

thanks doughboy would you know the correct pressures by any chance, as i said i can`t see the tyre sizes on the info plate!!

[Dr Dave]

They will be on a label on the side of your door pillar.

For various tyre sizes

Failing that, read the manual.

[doughboy]

Originally Posted by msportbluey

thanks doughboy would you know the correct pressures by any chance, as i said i can`t see the tyre sizes on the info plate!!

Take a photo of the plate and post it up here....