Tyre Size Help

[DTR-DEVIL]

I See This 195/50/40 << (just an example) about a tyre and im Stumped about wat it means, it abviously means something like Width or thickness? Am i close! :confused:

[Philsutton]

steady on there a 40 inch alloy lol,

The 195 bit is the width of the tyre, the 50 is the profile size (i.e. 50 - 50% of the alloy ) and the 40 as you put it is the diameter of the alloy.

[Stanley]

195 is the width
50 is the tyre wall height ( the profile )
15 is the wheel size ( diameter )

[John]

50 is the tyre wall height ( the profile )


Nearly but not quite, the 50 is called "the aspect ratio" As already explained by phil.

[Stanley]

I know its not 50mm high, just trying to break the format down so its understandable to the lad:thumb:

[Iain]

Tthe 50 is the profile size (i.e. 50 - 50% of the alloy )
Percentage of the tyre width and not alloy width. :p

[Dar]

195/50R15

195 is the width of the tyre in mm
50 is the height of the tyre as a percentage of the width
R15 the size of the rim that the tyre fits in inches

and I don't blame you for being confused. Why the tyre measurement uses mm,% & " all in one go is beyond me!

Thats the most common way. Slicks are different again!

Here's a page that explains it in a little more detail - http://www.which.co.uk/reports_and_campaigns/cars/reports/running_a_car/accessories/Tyres/Tyres_essential_product_574_70980_3.jsp

[DTR-DEVIL]

Cheers Buddies!
Where's my "Learning Tyre Size badge then" :D

[Philsutton]

Percentage of the tyre width and not alloy width. :p


pfffffft same difference lol