tyre meaning

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Mon 16 Sep 2002 11:44
tyre meaning - nocomment
Hi all.
While investigating new tyres, I checked the current size:
'195/65/R15 - 91H - XH1' is the marking.
My current understanding is that R is the speed rating.
Now the surprising part is that R is 106 miles per hour 'safety speed'.
My surprise comes from the fact that the car is slightly faster than that (French motorway, *grin*).
Anyone knows whether there is a reason why the standard tyres fitted are 'slower' than the car ?
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Mon 16 Sep 2002 11:46
tyre meaning - TrevorP
They are not. "H" is the speed rating.
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Mon 16 Sep 2002 15:00
tyre meaning - John S
and H rated tyres are OK up to 130miles/hr.

Regards

John S
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Mon 16 Sep 2002 12:01
tyre meaning - BrianW
Just to put you out of your misery, the R indicates that they are radial tyres.
195 is the tyre width.
65 is the profile i.e. height of the tyre compared to the width.
15 is the wheel diameter.
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Mon 16 Sep 2002 13:03
tyre meaning - blank
Just to expand a little more
195 is the width in mm
65 is the profile expressed as a percentage of the width in mm
15 is the wheel diameter in inches

XH1, well, at a guess the tyres are michelin pilot XH1's or whatever they are called

hth
Andy
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Mon 16 Sep 2002 12:14
tyre meaning - Alwyn
Lots of information here.

www.tyresave.co.uk/tyreinfo.html
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Mon 16 Sep 2002 23:12
tyre meaning - nocomment
There is a lot to be said for the Internet, but more importantly a lot of thanks to all.
I would like to think that I am a little bit more intelligent, or a little wiser, but it is just that I can now order the proper tyres for the car :-)
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