Log in

View Full Version : Motorsport tyre sizes..


Stuart
31-01-06, 09:55 AM
how the feck do you convert the random size number you get into a wheel rime/comprable road tyre size?
wisewood
31-01-06, 09:59 AM
wtf?
Stuart
31-01-06, 10:02 AM
dont worry w00dy you wouldnt understand :p

its a general car question lol.
Mark T
31-01-06, 10:02 AM
Give an example of the motorsport code.
Stuart
31-01-06, 10:07 AM
ones im looking at 20/54/13 (not sure thats a correct one though lol)
Mark T
31-01-06, 10:14 AM
Width in CM, Wall Height in MM and Radius in Inches?

If you think about it... I know it seems wierd about the wall height being a dimension as a pose to a percentage. But in motorsport the tyre depth will be another addition to the suspension set-up? I.e big walls have plenty of give and small don't... Having it as a percentage is probably a little too crude to set up a car properly...

Just my take on it
wisewood
31-01-06, 10:16 AM
Sorry... didnt realise motorsport and general car stuff was the same thing ;)
Stuart
31-01-06, 10:20 AM
ahhh in another place

The tyres are 20/54/13 and are equivelent in size to 205/60/13


funky
Mark T
31-01-06, 10:22 AM
Handbags at dawn?
Mark T
31-01-06, 10:22 AM
Where was that?
Stuart
31-01-06, 10:25 AM
"the bay"
dhdev (Oli)
31-01-06, 12:48 PM
i thought it was width in cm, dia in cm and rim size
Ste L
31-01-06, 01:06 PM
Race tyre markings

Size markings. e.g. 280/675-18 show nominal tread width (mm), overall tyre diameter (mm) and bead diameter (in inches). Dimensions being taken from an inflated tyre under unloaded conditions. For post historic tyres the markings e.g. 600/1200-15 are nominally section height (inches), section width (inches) and bead diameter (inches).
N.B. Certain rules call for maximum overall width to include rims.


Take from here : http://dunloptyres.co.uk/ourTyres/motorsport/

hope this helps
benji
31-01-06, 01:22 PM
i thought it was width in cm, dia in cm and rim size

we have a winner.
dhdev (Oli)
31-01-06, 04:52 PM
we have a winner.

Ooh! do i get a prize?
How about a free set of motorsport tyres lol

Ps anyone tried Toyo R888's yet? I'm gonna get a set for mine as they're ?260 for 4! The Elise boys seem to rate em too.
benji
31-01-06, 04:54 PM
thats cheap. my yoko a048's were ?350 and that was with a discount.

what size are you looking at?
dhdev (Oli)
31-01-06, 04:59 PM
195/50 15 i think they were only found one place that stocks em and can't remember the name of it right now, they're a medium/soft compound.
Stuart
31-01-06, 05:35 PM
camskill sell 888's but they arent cheap from there lol