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Disco tyre Q - confused

 
 
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champ69
Winch Assistant


Joined: 05 May 2004
Odometer: 95
Location: tamworth staffs



PostPosted: Thu Nov 16, 2006 5:35 pm    Post subject: Disco tyre Q - confused Reply with quote

I swopped my disco steels/205/80/16 for some alloys 235/70/16. Have used a tyre calculator and that says that at 70, they are the same (well, 0.1mph difference), but I could SWEAR that the car sits higher, AND tha the acclleration IS slower, ie that it has more 'legs' and the gearing DOES feel differnt. AM I imagining this ??
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Mr Tyre
Mr Tyre


Joined: 17 Jun 2002
Odometer: 4927
Location: Darlington Co Durham



PostPosted: Thu Nov 16, 2006 9:25 pm    Post subject: Reply with quote

Yes, if there is any difference between them in theory it will only be a couple of mm or so.
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:)
Mud Obsessed


Joined: 06 Feb 2006
Odometer: 4337
Location: Norfolk


1995 Land Rover Defender

PostPosted: Thu Nov 16, 2006 9:52 pm    Post subject: Reply with quote

Could the tyres actually be 235/80/16's?

Put a straight edge across the top and measure to the ground (it's not 100% accurate but will do as a quick check):
235/70/16 should measure about 735mm
235/80/16 should measure about 782mm
Quite a difference!

Out of interest 205/80/16 measures 734mm
--
Tim.

__________________________________
-- Timothy Birt --
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Mr Tyre
Mr Tyre


Joined: 17 Jun 2002
Odometer: 4927
Location: Darlington Co Durham



PostPosted: Fri Nov 17, 2006 7:11 am    Post subject: Reply with quote

If the speedo is 0.1 different than that will be 205/80R16 against 235/70R16.If the calculation was different by around 6.5% than that would be for 235/80R16. 235/80R16's won't fit a standard ride height Discovery without work.Some make for make 205/80R16's are the same diameter as each other.
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The Pikester
Mud Obsessed


Joined: 14 Jan 2004
Odometer: 3540
Location: The Mountains of Waleshire



PostPosted: Fri Nov 17, 2006 9:19 am    Post subject: Reply with quote

Especially if your new tyres are remounds? Just as an example, the 35" Simex copies on Steves Challenge truck (remoulds) are 1.5 inches (4cm) bigger in diameter than original simexes. That was measuered side by side.
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