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Old 09-15-2005, 05:02   #1 (permalink)
Pantelis Giamarellos
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Tyres sizes comparison chart?

People Hi,

does anyone know of an internet or published tyres sizes comparison chart?

I am really confused with the size and dimensions comparison between the
ordinary sized (eg 205 X 16" or 235 X 85 X 16") tyres and the truck sizes
number (35 X 12.5 X 17") that mainly our big tyres sized off roading
brothers use.

Mainly interested on the diameter and circumference and ordinary tyre size
comparison for a 35 X 12.5 X 17" tyre but a chart would be extremely
helpful.

I know for example that a 235 X 85 X 16 tyre is the same size as a 33 X 11.5
X 15 tyre but that is all.

thanks in advance for your kind input

Take care
Pantelis Giamarellos
LAND ROVER CLUB OF GREECE


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Old 09-15-2005, 12:01   #2 (permalink)
Austin Shackles
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Re: Tyres sizes comparison chart?

On or around Thu, 15 Sep 2005 14:22:10 +0300, "Pantelis Giamarellos"
<pantg@otenet.gr> enlightened us thusly:

>People Hi,
>
>
>Mainly interested on the diameter and circumference and ordinary tyre size
>comparison for a 35 X 12.5 X 17" tyre but a chart would be extremely
>helpful.
>
>I know for example that a 235 X 85 X 16 tyre is the same size as a 33 X 11.5
>X 15 tyre but that is all.


case 1: crossplies. typical size: 7.50x16. rim is 16" diameter (the bit
the tyre mounts on, natch) and the tyre nominally both 7.5" wide and tall.
hence overall diameter is 16+7.5+7.5 = 31".

case 2a: "standard" radials, in EU mostly. typical size: 205R16. rim is
16", tyre is nominally 205mm wide and 82% of 205mm tall. overall diameter:
16+(205*0.82*2/25.4) = 16 + 13.2 = 29.2"

case 2b: radials with other profiles: typical size: 235/70R16. rim is 16",
tyre is nominally 235mm wide and 70% of 235mm high. as above, o/d is
16+(235*.7*2/25.4) = 16+12.95 = 28.95"

case 3: american-style size radials: typical size: 31-10.5R15. rim is 15",
o/d of tyre is 31" nominal, width of tyre 10.5" nominal.



you mention 235/85R16 - o/d for this is 16+(235*.85*2/25.4) = 16+15.7 =
31.7"
closest match in US-style size on 15" is 32-9.5R15


I guess I could have a crack at a chart, at that. gimme a few days, if
no-one comes up with one.
--
Austin Shackles. www.ddol-las.net my opinions are just that
"The great masses of the people ... will more easily fall victims to
a great lie than to a small one" Adolf Hitler (1889 - 1945)
from Mein Kampf, Ch 10
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Old 09-15-2005, 13:01   #3 (permalink)
Huw
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Re: Tyres sizes comparison chart?


"Pantelis Giamarellos" <pantg@otenet.gr> wrote in message
news:3ot3r5F7la6lU1@individual.net...
> People Hi,
>
> does anyone know of an internet or published tyres sizes comparison chart?
>
>



Type 'tyre size calculator' in MSN or Google and you will be spoilt for
choice.

Huw


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Old 09-15-2005, 14:01   #4 (permalink)
steve Taylor
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Re: Tyres sizes comparison chart?

Huw wrote:

> Type 'tyre size calculator' in MSN or Google and you will be spoilt for
> choice.


Trouble is you end up with these things with so many bloody variables
you can't work out what you want !

We're still hunting for "9X16" alternatives. What WILL fit on a 101's
rims ? And not look silly and/or need wheel arch extensions.....

Steve
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Old 09-15-2005, 14:01   #5 (permalink)
Huw
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Re: Tyres sizes comparison chart?


"steve Taylor" <steve@thetaylorfamily.org.uk> wrote in message
news:4329d4b1$0$32652$da0feed9@news.zen.co.uk...
> Huw wrote:
>
>> Type 'tyre size calculator' in MSN or Google and you will be spoilt for
>> choice.

>
> Trouble is you end up with these things with so many bloody variables
> you can't work out what you want !
>
> We're still hunting for "9X16" alternatives. What WILL fit on a 101's
> rims ? And not look silly and/or need wheel arch extensions.....
>
> Steve


Ah well! I can lead a horse to the water but I can't make him drink :-)

Huw


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Old 09-15-2005, 14:01   #6 (permalink)
steve Taylor
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Re: Tyres sizes comparison chart?

steve Taylor wrote:

> We're still hunting for "9X16" alternatives. What WILL fit on a 101's
> rims ? And not look silly and/or need wheel arch extensions.....


Am I right in thinking that 9 x 16 have 100% aspect ratio ?

Steve
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Old 09-15-2005, 14:01   #7 (permalink)
Huw
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Re: Tyres sizes comparison chart?


"steve Taylor" <steve@thetaylorfamily.org.uk> wrote in message
news:4329d9dd$0$21316$db0fefd9@news.zen.co.uk...
> steve Taylor wrote:
>
>> We're still hunting for "9X16" alternatives. What WILL fit on a 101's
>> rims ? And not look silly and/or need wheel arch extensions.....

>
> Am I right in thinking that 9 x 16 have 100% aspect ratio ?
>
> Steve


From http://www.juracid.co.uk/lr/index.ph...tishtyres.html

9.00x16 are 100% aspect ratio which is metric 250/100r16. The nearest actual
metric size is 315/75/16 which is usefully wider than standard.
For other compatible sizes, enter 250/100r16 into one of the common
calculators and any alternative you like to see whether they are suitable
from the gearing aspect.

Hope that helps.

Huw


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Old 09-15-2005, 15:02   #8 (permalink)
steve Taylor
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Re: Tyres sizes comparison chart?

Huw wrote:

> From http://www.juracid.co.uk/lr/index.ph...tishtyres.html
>
> 9.00x16 are 100% aspect ratio which is metric 250/100r16. The nearest actual
> metric size is 315/75/16 which is usefully wider than standard.
> For other compatible sizes, enter 250/100r16 into one of the common
> calculators and any alternative you like to see whether they are suitable
> from the gearing aspect.
>
> Hope that helps.


AH ! Thanks Huw, that does help a lot.

Steve
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Old 09-15-2005, 15:02   #9 (permalink)
Tony
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Re: Tyres sizes comparison chart?

Heres one I found to be very informative.
http://www.carbibles.com/tyre_bible.html
Tony

"Huw" <hedydd[nospam]@tiscali.co.uk> wrote in message
news:3ou4tuF7gvc5U1@individual.net...
>
> "steve Taylor" <steve@thetaylorfamily.org.uk> wrote in message
> news:4329d9dd$0$21316$db0fefd9@news.zen.co.uk...
>> steve Taylor wrote:
>>
>>> We're still hunting for "9X16" alternatives. What WILL fit on a 101's
>>> rims ? And not look silly and/or need wheel arch extensions.....

>>
>> Am I right in thinking that 9 x 16 have 100% aspect ratio ?
>>
>> Steve

>
> From http://www.juracid.co.uk/lr/index.ph...tishtyres.html
>
> 9.00x16 are 100% aspect ratio which is metric 250/100r16. The nearest
> actual metric size is 315/75/16 which is usefully wider than standard.
> For other compatible sizes, enter 250/100r16 into one of the common
> calculators and any alternative you like to see whether they are suitable
> from the gearing aspect.
>
> Hope that helps.
>
> Huw
>



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Old 09-16-2005, 01:01   #10 (permalink)
Brian Tonks
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Re: Tyres sizes comparison chart?

Width % Profile Rim Size Tyre Diameter Tyre Circumference
175 80 16 27.024 84.897
205 80 16 28.913 90.834
235 70 16 28.953 90.958
255 65 16 29.051 91.267
225 75 16 29.287 92.009
245 70 16 29.504 92.689
235 75 16 29.878 93.864
7 16 30.000 94.248
255 70 16 30.055 94.421
215 85 16 30.390 95.472
245 75 16 30.469 95.720
265 70 16 30.606 96.153
7.5 16 31.000 97.389
275 70 16 31.157 97.884
265 75 16 31.650 99.430
235 85 16 31.728 99.678
255 85 16 33.067 103.883


Regards

Brian Tonks
Tonks4x4
27-29 Main Street
Huthwaite
Sutton-In-Ashfield
Nottinghamshire
NG17 2LD
01623 452885

http://www.tonks4x4.com



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