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Scottie
28th February 2008, 11:20 PM
Sorry for another tyre question but I have a set of Brand New Tyres in my Garage never used came with wheels for my BMW.

They are 205 x 50 x 17

now I know for the 17's on a Mini should be 205x45x17

but will my Tyres fit???????



and if they do will it make a huge difference in the speedo readings.

Craig
28th February 2008, 11:23 PM
they will fit the wheel, but they will change the mph shown. You need a mathmetician to work that out :rolleyes: :D or find a website that gives you comparisons.. :)

done it for you ya lazy wumin...;)

makes a 3.33% difference so if your speedo is saying 70, you are actually doing 72.33mph. you will need to take that info consideration. :D

Scottie
28th February 2008, 11:29 PM
they will fit the wheel, but they will change the mph shown. You need a mathmetician to work that out :rolleyes: :D or find a website that gives you comparisons.. :)

done it for you ya lazy wumin...;)

makes a 3.33% difference so if your speedo is saying 70, you are actually doing 72.33mph. you will need to take that info consideration. :D

h'mm well I usually go with my micro pilot think it's worth ago as they are just sitting there and they are non runflats.:cool:

MarcoV
29th February 2008, 09:55 AM
Personally i wouldn't put 50 profile tyres on a 17" wheels! 45 at the most. It will look like a tractor!

Scottie
29th February 2008, 11:25 AM
do you think only talking 5mm difference.

Big Gordy
29th February 2008, 11:42 AM
If your running sports + suspension it might make it feel a bit softer:rolleyes: :cool:

Sweeney
29th February 2008, 12:33 PM
50 is a percentage of overall tyre width, not 50mm.

Scottie
29th February 2008, 12:58 PM
50 is a percentage of overall tyre width, not 50mm.

Explain please.??

duncan
29th February 2008, 01:18 PM
Tyre sizes are made up of a number of different numbers and letters. For example tyre size 175/70 R 13 82 T is made up of the following information:

175 - The tyre section width in millimetres (That is the width of the tyre tread)
70 - The aspect ratio in % (the height of the sidewall divided by the tyre's width)
R Denotes the tyre's construction type - in this case it's a radial
13 Rim diameter in inches
82 Load Index
T Speed Rating

The Dogfather
29th February 2008, 01:33 PM
Tyre sizes are made up of a number of different numbers and letters. For example tyre size 175/70 R 13 82 T is made up of the following information:

175 - The tyre section width in millimetres (That is the width of the tyre tread)
70 - The aspect ratio in % (the height of the sidewall divided by the tyre's width)
R Denotes the tyre's construction type - in this case it's a radial
13 Rim diameter in inches
82 Load Index
T Speed Rating

Fi, the height of the side wall will increase by 1cm (width 205 x aspect ratio 50%) from 9 cm to 10cm

Scottie
29th February 2008, 01:39 PM
yeh so a difference of 5mm from north to centre to south and east to centre to west =20mm bp by putting on the 50 profile this will increase the diameter by 21mm so I was 1mm out. Keeping in mind this is a woman trying to work this out.;)

duncan
29th February 2008, 01:53 PM
More luck than judgement ;)

stoney
29th February 2008, 05:15 PM
here is a web site that will tell you what you need 2 know about the difrence in tyres http://homepage.ntlworld.com/cattermole/tyres.htm

drb5374
29th February 2008, 05:46 PM
This is also very useful... http://www.miata.net/garage/tirecalc.html