Tyre pressure question.
Tyre pressure question.
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Discussion

DavidLScott

Original Poster:

1,048 posts

246 months

Sunday 29th September 2013
quotequote all
The pressure guide on the doorpost shows 2.4 bar for my 05 JCW (that started life as an S for 2 days).

My wife's 03 Cooper shows 2.1 bar.

Why the difference as the pressures apply to all tyres in the range on the charts?
The cars are pretty much identical, apart from performance, so would that 0.3 bar really be necessary?

si_xsi

1,291 posts

217 months

Sunday 29th September 2013
quotequote all
Does the cooper come factory fitted with run flats like the cooper S which generally require a higher pressure?

DavidLScott

Original Poster:

1,048 posts

246 months

Monday 30th September 2013
quotequote all
Yes. RFT's on both cars (but hopefully not on the JCW after I've worn them out.
Even the tyre and wheel size doesn't necessarily change the pressures, according to the labels.

We did de-select the stiffer Chilli suspension on her Cooper as it was firm enough on the standard but otherwise it's an ordinary Cooper but I'm sure that wouldn't affect it.