Sign in to follow this  
The Cleaner

Tyre Pressures

Recommended Posts

What tyre pressures is everone running on SE's with 17" wheels. The manual reckons 35 front and 38 (psi) rear for under 100mph. I took delivery of the car with 38 front and 40 rear.

Anyone covered enough miles to comment on wear and inflation pressure?

Thanks

Share this post


Link to post
Share on other sites

Should tell you on the sticker either in the door jam or fual flap, i could be wrong on the location.

It also depends on load, i.e how many passengers in the car etc..

Double check the guage which you obtained your tyre pressure reading from, most ( but not all ) garage forecourt guages are in-accurate as they are often abused and not re-calibrated.

If this is important i'd advise on a good quality digital guage and check the pressures on every re-fill of fuel, I travel an average of 700 per week and always watch mine, as any un-noticed deviation can lead to adverse tyre wear...

Share this post


Link to post
Share on other sites

Mine came in 39fr and 44rr. The ride was hard and choppy...

Then reduced them to 36fr and 39rr and things have improved. As this is within tolerances, I have not noticed anything untoward as far as wear is concerned, but the car defo rides better...

PS - I've got one of the mechanical "pen" types of pressure checkers, which apparently are supposed to be accurate...but who knows 'eh??!!

Share this post


Link to post
Share on other sites

Thanks for replies.

My gauge is extremely accurate, dont use petrol stations and tyres were cold.

The reason I ask is on my previous 330i Sport it would go through rear tyres in 6,000 miles (albeit pirellis) at the recommended 42 psi rear. There would be say 2mm in the centre and 4mm at the sides, so obviously over inflated.

Share this post


Link to post
Share on other sites

I thought over inflation produced more wear in the centre of the tyre.

Share this post


Link to post
Share on other sites

I thought over inflation produced more wear in the centre of the tyre.

That's just what he said above ;);) :P

Wearing in the centre to that level sounds like overinflation. Softer tyres (slightly) can improve grip at the rear but not by too much, or they'll not last. In saying that, 6000 is not great even for Pirelli's :o

Brian.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this