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tyres for xj12
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denchan



Joined: 03 Dec 2007
Posts: 8

PostPosted: Thu Jan 10, 2008 11:17 am    Post subject: tyres for xj12 Reply with quote

Can anyone tell me the correct tyres for a XJ daimler double six series 3 1990
At the moment i have Falken 215 /70R15 fitted .Dennis
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Rick
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Joined: 27 Apr 2005
Posts: 21215
Location: North-west UK

PostPosted: Mon Jan 14, 2008 4:00 pm    Post subject: Reply with quote

Hi Dennis, I had a look in Nigel Thorley's 'Original Jaguar XJ' book and it says that the V12 S3 XJ switched from 205s to 215s in 1981. Pirelli P5s became an option at this time.

When the XJ6 S1 was launched it came fitted with Dunlop SP radials - ER70VR-15. When the S1 XJ12 was launched, it came with a revised version of this tyre - the 205/70VR15, and this tyre remained standard fit til 1981 when the switch to 215s was made.

hth, Rick
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Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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denchan



Joined: 03 Dec 2007
Posts: 8

PostPosted: Mon Jan 14, 2008 4:07 pm    Post subject: tyres Reply with quote

Hi Rick Thanks for clearing the tyre issue up for series 3 v12.It appears i have the right size fitted Dennis
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Rick
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Joined: 27 Apr 2005
Posts: 21215
Location: North-west UK

PostPosted: Mon Jan 14, 2008 4:31 pm    Post subject: Reply with quote

No probs - are yours high speed rated?

R
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Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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denchan



Joined: 03 Dec 2007
Posts: 8

PostPosted: Tue Jan 15, 2008 10:09 am    Post subject: tyres Reply with quote

Hi Rick I think my tyres are not correct speed rating 215/70R15 so 215/70VR15 should be fitted .I think ill drive slowly till i renew them lol.
Thanks again Dennis
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Uncle Joe
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PostPosted: Tue Jan 15, 2008 4:34 pm    Post subject: Reply with quote

For once, I've just checked something before opening my mouth on this forum.... Very Happy

You do realise that using tyres of an incorrect rating, be it speed, loading or anything else for that matter, is a contravention of Construction and Use Regulations, and could therefore invalidate your insurance in case of an accident?

If you do a bit of trawling, you will see several cases to prove my point.
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Rick
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Joined: 27 Apr 2005
Posts: 21215
Location: North-west UK

PostPosted: Tue Jan 15, 2008 4:43 pm    Post subject: Reply with quote

I did wonder if perhaps the speed rating of a tyre also has a bearing on the suitability of the tyre sidewall to cope with a heavy car, when pressing on at speed??

R
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Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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denchan



Joined: 03 Dec 2007
Posts: 8

PostPosted: Wed Jan 16, 2008 3:52 pm    Post subject: Reply with quote

Hi Rick sorry to be a pain but back to tyre issue I noticed that alongside the 215/70R15 marking there is also V97 marked .Does this mean they are the higher speed rating? Dennis.
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Penman



Joined: 23 Nov 2007
Posts: 4171
Location: Lancashire

PostPosted: Wed Jan 16, 2008 4:11 pm    Post subject: Reply with quote

Hi
This link gives tyre speed and load ratings and also a conversion tool in order to maintain same rolling circumference.

http://www.tyresave.co.uk/tyrspeed.html

V is speed max 149mph

97 is 730kg max load on the one wheel
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