edoardo2677
Member Since: 29 Nov 2008
Location: kent
Posts: 69
  
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Hi Guys
Any help on this please. Looking at upgrading my wheels and tyres on my 2007 Disco. i have fitted HSE 19" wheels with 255 55 19 scorpion tyres. Im looking at getting new 19" (RR vogue) alloys with 255 50 r19 scorpions tyres.
Would i suffer any problems with speedo calibration etc or am i just worrying about nothing.
Any pointers would be appreciated guys, or should i stick with the size i got for snow etc?
Thanks
Edd 8)
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 25th Oct 2011 8:24 pm |
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CFB
Member Since: 02 Dec 2005
Location: Bradford, West Yorkshire
Posts: 6100
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I would never fit smaller tyres personally, they look wrong, may have too low a load rating and will make the speedo over read, albeit only by a fraction. 2020 BMW X1 18d XDrive X-Line Auto
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| 25th Oct 2011 8:26 pm |
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edoardo2677
Member Since: 29 Nov 2008
Location: kent
Posts: 69
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Thanks Andy. It is a hard decission to make as i know the Disco sits higher than the RR sport.
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| 25th Oct 2011 8:32 pm |
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hids4u
Member Since: 12 Apr 2009
Location: Leeds
Posts: 1155
 
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255 55 19 i would say
50 is what the sport profile is
its a sportier ride but harder
i like my arm chair softness of the d3
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| 25th Oct 2011 8:33 pm |
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edoardo2677
Member Since: 29 Nov 2008
Location: kent
Posts: 69
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Apart from the ride do u think it would make any other difference to the running of the car in snow or mud.
I'm In a right dilemma!
Also Would they look odd on the Disco 3?
Thanks
Edd
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| 25th Oct 2011 8:39 pm |
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hids4u
Member Since: 12 Apr 2009
Location: Leeds
Posts: 1155
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i run sport with the 55 profile
5% of 255 is bug-ger all as far as looks go
you give up a few mm of wall so this is less good for off rosding but in reality he sport aint bad off road - hence makes bug-ger all difference. the tread pattern will have more influence
unless you have a deal on 50s i would stick with 55
Last edited by hids4u on 25th Oct 2011 10:01 pm. Edited 1 time in total
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| 25th Oct 2011 8:44 pm |
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geoff.
Member Since: 24 Jan 2010
Location: West kent
Posts: 8531
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255-50-19 are 3.3% smaller in overall rolling circumference so you just might alter the handling of the D3 if that's altered then you might have insurance implications 
Geoff
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| 25th Oct 2011 9:08 pm |
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hids4u
Member Since: 12 Apr 2009
Location: Leeds
Posts: 1155
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sure - it would handle better so guess you would get a discount
do the maths on the 255 50 19 and 275 40 20 - LR allow some tolerance themselves
The one issue of course some like to worry about is the load rating - the sport being 107 and D3 111
But i wouldnt worry about either
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| 25th Oct 2011 10:03 pm |
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geoff.
Member Since: 24 Jan 2010
Location: West kent
Posts: 8531
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See your a tyre expert now Ian 
275/40-20 is even smaller 4.6% smaller and this size is not a D3 size should be 275/45-20
Enough said Edd do whatever you feel happy with
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| 26th Oct 2011 5:13 am |
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hids4u
Member Since: 12 Apr 2009
Location: Leeds
Posts: 1155
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Just lucky enough to have a sport and D3 and driven both cars with different set up
Those tyre sizes are for the RRS showing what range LR fit as standard but now you got me thinking is it 40 or 45 
I have a little spreadsheet that gives me total diameter for many sizes for 19 and 20 inch tyres as I have had tried many set ups over
Last edited by hids4u on 27th Oct 2011 8:29 pm. Edited 1 time in total
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| 26th Oct 2011 6:03 am |
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al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10350
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quite a few of us run wheel/tyre setups that are none standard, but in general, its the weight rating that I think most of us take the most seriously. I certainly dont want my 2.7 tons sitting on something that might not be quite up to what I need. 255/50's are very likely to be 109 rated at best, 107, or even 103. Why not stick with 255/55x19's at 111.
Al Volvo XC90 B5 Plus Dark
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Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
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| 26th Oct 2011 8:10 am |
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edoardo2677
Member Since: 29 Nov 2008
Location: kent
Posts: 69
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Unnecessary quote removed
Thanks gentlemen for advise.
Decided not to go for them as i was thinking the same, happy at the moment with the 255 55's so will wait for another set to come up with same tyres.
I know its only a 3% difference but to us men size matters even 3%! lol
Edd
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| 26th Oct 2011 6:44 pm |
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katodisco
Member Since: 04 Nov 2011
Location: Uphall, West Lothian
Posts: 5
 
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Is there really that much of a difference in the load ratings? I would have thought a rrs and a d3 weigh about the same! I certainly don't intend ravelling at the speed rating increase the change in model brings.  1985 LR90 for off road
Disco 3 for both
1978 Dolomite Sprint for fun
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| 19th Jan 2012 6:03 am |
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